Instruction Manual
2EN
Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
When using an electrical Appliance, basic precautions
should always be followed, including the following:
READ ALL INSTRUCTIONS BEFORE
USING THIS APPLIANCE SAVE THESE
INSTRUCTIONS
1. The Appliance is not intended for use by persons(including
children)with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the Appliance by a person responsible
for their safety.
2. Clear the area to be cleaned. Remove power cords
and small objects from the oor that could entangle the
Appliance. Tuck rug fringe under the rug base, and lift
items such as curtains and tablecloths off the oor.
3. If there is a drop off in the cleaning area due to a step
or stairs, you should operate the Appliance to ensure
that it can detect the step without falling over the edge.
It may become necessary to place a physical barrier at
the edge to keep the unit from falling. Make sure the
physical barrier is not a trip hazard.
4. Only use as described in this manual. Only use
attachments recommended or sold by the manufacturer.
5. Please make sure your power supply source voltage
matches the power voltage marked on the Auto-Empty
Station.
6. For INDOOR household use ONLY. Do not use
the Appliance in outdoor, commercial or industrial
environments.
7. Use only the original rechargeable battery and Auto-
Empty Station provided with the Appliance from
the manufacturer. Non-rechargeable batteries are
prohibited. For battery information, please refer to
Specications section.
8. Do not use without dust bin and/or lters in place.
9. Do not operate the Appliance in an area where there
are lit candles or fragile objects.
10. Do not use in extremely hot or cold environments (below
-5˚C/23˚F or above 40˚C/104˚F).
11. Keep hair, loose clothing, ngers, and all parts of
body away from any openings and moving parts.
12. Do not operate the Appliance in a room where an
infant or child is sleeping.
13. Do not use Appliance on wet surfaces or surfaces
with standing water.
14. Do not allow the Appliance to pick up large objects
like stones, large pieces of paper or any item that
may clog the Appliance.
15. Do not use Appliance to pick up ammable or
combustible materials such as gasoline, printer or copier
toner, or use in areas where they may be present.
16. Do not use Appliance to pick up anything that is
burning or smoking, such as cigarettes, matches, hot
3 EN
ashes, or anything that could cause a re.
17. Do not put objects into the suction intake. Do not use if
the suction intake is blocked. Keep the intake clear of
dust, lint, hair, or anything that may reduce air ow.
18. Take care not to damage the power cord. Do not pull
on or carry the Appliance or Auto-Empty Station by
the power cord, use the power cord as a handle, close
a door on the power cord, or pull power cord around
sharp edges or corners. Do not run Appliance over the
power cord. Keep power cord away from hot surfaces.
19. If the power cord is damaged, it must be replaced by
the manufacturer or its service agent in order to avoid
a hazard.
20. Do not use with a damaged power cord or receptacle.
Do not use the Appliance or Auto-Empty Station if it
is not working properly, has been dropped, damaged,
left outdoors, or come in contact with water. It must be
repaired by the manufacturer or its service agent in order
to avoid a hazard.
21. The lithium battery type suitable for CH2403 is max.
8 cells, max. nominal voltage DC 14.4 V, and rated
capacity 4,800 mAh.The battery must be removed and
discarded according to local laws and regulations before
disposal of the Appliance.
22. Turn OFF the power switch before cleaning or
maintaining the Appliance.
23. The plug must be removed from the receptacle before
cleaning or maintaining the Auto-Empty Station.
24. Remove the Appliance from the Auto-Empty Station,
and turn OFF the power switch to the Appliance
before removing the battery for disposal of the
Appliance.
25. The battery must be removed and discarded
according to local laws and regulations before
disposal of the Appliance.
26. Please dispose of used batteries according to local
laws and regulations.
27. Do not incinerate the Appliance even if it is severely
damaged. The batteries can explode in a re.
28. When not using the Auto-Empty Station for a long
period of time, please unplug it.
29. The Appliance must be used in accordance with
the directions in this Instruction Manual. ECOVACS
ROBOTICS cannot be held liable or responsible for
any damages or injuries caused by improper use.
30. The robot contains batteries that are only replaceable
by skilled persons. To replace the robot’s battery,
please contact Customer Service.
31. If the robot will not be used for a long time, power OFF the
robot for storage and unplug the Auto-Empty Station.
32. WARNING: For the purposes of recharging the
battery, only use the detachable supply unit
CH2403 provided with the Appliance.
4EN
To satisfy RF exposure requirements, a separation distance
of 20 cm or more should be maintained between this device
and persons during device operation.
To ensure compliance, operations at closer than this
distance is not recommended. The antenna used for this
transmitter must not be co-located in conjunction with any
other antenna or transmitter.
Correct Disposal of this Product
This marking indicates that this product should not be
disposed of with other household waste throughout
the EU. To prevent possible harm to the environment or
human health from uncontrolled waste disposal, recycle it
responsibly to promote the sustainable reuse of material
resources. To recycle your used device, please use the
return and collection systems or contact the retailer where
the product was purchased. They can safely recycle this
product.
For EU Countries
For EU Declaration of Conformity information, visit https://
www.ecovacs.com/global/compliance
Device Update
Typically, some devices are updated bi-monthly, but not
always so specic.
Some devices, especially those that went on sale more
than three years ago, will only be updated if a critical
vulnerability is found and xed.
Ensure the robot is always connected to a network, for
smart features to function properly.
Class II
Short-circuit-proof safety isolating
transformer
Switch mode power supply
For indoor use only
Direct current
Alternating current
Read all instructions before using
(this appliance)
Time-lag miniature fuse-link
5 EN
European Union Compliance Statement
Information on Disposal for Users of Waste
Electrical & Electronic Equipment
This symbol on the product or on its packaging
indicates that used electrical and electronic products
should not be mixed with unsorted municipal waste.
For proper treatment, it is your responsibility to
dispose of your waste equipment by arranging to
return it to designated collection points.
Disposing of this product correctly will help save
valuable resources and prevent any potential
negative effects on human health and the
environment, which could otherwise arise from
inappropriate waste handling.
To return your used device, please use the return
and collection systems or contact the retailer where
the product was purchased, which is free of charge,
please contact your local authority for further details
of your nearest designated collection point.
Penalties may be applicable for incorrect disposal
of this waste, in accordance with your national
legislation.
Restriction of the use of certain hazardous
substances (RoHS) Directive
Radio Equipment Directive
Ecovacs Home Service Robotics Co., Ltd. hereby
declares the whole product including parts (cables, cords,
and so on) meets the requirements of RoHS Directive
2011/65/EU and amendment Commission Delegated
Directive (EU) 2015/863 on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment ("RoHS recast" or "RoHS 2.0").
Ecovacs Home Service Robotics Co., Ltd. hereby
declares that the product listed in this section comply
with the essential requirements and other relevant
provisions of the Radio Equipment Directive 2014/53/EU.
Europe Authorised Representative:
Ecovacs Home Service Robotics Co., Ltd. hereby declares
that the product comply with the essential requirements and
other relevant provisions of the RoHS Directive 2011/65/
EU and amendment Commission Delegated Directive (EU)
2015/863, the Radio Equipment Directive 2014/53/EU.
The declaration of conformity can be viewed at the following
address: https://www.ecovacs.com/global/compliance.
ECOVACS Europe GmbH
Holzstrasse 2 | D-40221 Düsseldorf | Germany
6EN
Auto-Empty Station
Base
PACKAGE CONTENTS
Robot
Washable Mopping Pad
Washable Mopping Pad
OZMO Pro 2.0
Vibrating Mopping System
Vacuum Module
(pre-installed)
Mopping Pad Plate
Reservoir
(pre-installed)
Instruction Manual
Instruction Manual
Side Brush
OZMO Pro 2.0 Vibrating Mopping System and Vacuum Module (
DKX55
)
Reservoir and Mopping Pad Module (
DKX56
)
Note: Figures and illustrations are for reference only and may differ from actual product appearance.
Product design and specications are subject to changes without notice.
7 EN
Robot
Bumper
Top Cover
Buttons
Edge Sensor
Buttons
Obstacle
Avoidance Module
Short Press: Exit/Return to the Station
Short Press: Start/Pause/Continue Long Press: Power on/off
Short Press: Start/End Spot Clean Long Press: Child Lock
RESET Button
Connect to App: Short press RESET button and follow voice prompts to connect to the App.
Restore to default settings: Press and hold RESET Button for 5 s. After you hear the voice
prompt, the startup music will be played and the robot will be restored to default settings.
Wi-Fi Status
Indicator
Dust Bin
Filter
Sponge Filter
Dust Disposal Port
Filter Net
Dust Bin Handle
Release Button
Bottom View (
DKX55
)
OZMO Pro 2.0 Vibrating Mopping System
Driving Wheels
Universal Wheel
Side Brush
Brush
Carpet
Detection Sensor
Anti-drop Sensor
Brush
Release Button
Vacuum Module
Charging
Contacts
Navigation Module
Washable Mopping Pad
Water Inlet
Reservoir
Release Button
Reservoir
PRODUCT DIAGRAM
Data Transfer Port
For professional
maintenance personnel
use only.
8EN
Auto-Empty Station
Power Cord
Container
Release Button
Dust Container
Dust
Release Toggle
Charging
Contacts
Auto-Empty Inlet
LED Indicator
Solid White:
Standby/Running
Goes out: Power Outage/
Deep Sleep Mode
Bottom View (
DKX56
)
Mopping Pad Module
Driving Wheels
Universal Wheel
Side Brush
Brush
Carpet
Detection Sensor
Anti-drop Sensor
Brush
Release Button
Mounting Slots for
Mopping Pad Plate
Reservoir
Note: Figures and illustrations are for reference only and may differ from actual
product appearance. Product design and specications are subject to changes
without notice.
Mopping Pad Plate
Washable Mopping Pad
9 EN
Name Functional Description
Navigation
Module
By utilizing the principle of triangulation, which involves
emitting and receiving laser beams reected by surrounding
objects, precise distance measurement information
between the DEEBOT and nearby objects can be calculated
through algorithms. When the DEEBOT moves within a
certain environment, the positions of surrounding objects
are determined to create a spatial map of the DEEBOT's
surroundings. The measurement range is 8 m.
Obstacle
Avoidance
Module
With three sets of infrared transmitter and receiver pairs,
it operates on the principle of infrared reection to gauge
obstacle distances by signal strength. The maximum
detection range is approx. 10 cm.
Anti-drop
Sensor
With infrared distance measurement, the infrared sensor
can detect the distance between the bottom of DEEBOT
and ground. DEEBOT will not move forward when there are
stairs in front or the identied distance exceeds the preset
threshold, realizing the Anti-drop. The trigger distance is
approx. 60 mm.
Carpet
Detection
Sensor
The ultrasound probe can emit ultrasonic waves with a
frequency of 300KHZ. The energy of the ultrasonic waves
is absorbed by the carpet. If the reected energy is below
the threshold, the DEEBOT recognizes the presence of the
carpet. According to ECOVACS lab tests, currently, over 50
types of carpets available on the market can be identied.
Edge Sensor
With infrared distance measurement, DEEBOT can detect the
distance between itself and objects on its right side. When
there is a wall or obstacle on the right side, DEEBOT will
perform edge cleaning to avoid missing spots or collisions.
Anti-collision
Sensor
When the transmitted signal is blocked by an obstacle, the signal
receiver will not be able to receive the signal. With this principle,
the robot will avoid obstacles when colliding with them.
SENSORS NOTES BEFORE CLEANING
Put away objects including cables, cloths and slippers, etc. on the
oor to improve the cleaning efciency.
Before using the product on a rug with tasseled edges, please fold
the rug edges under.
Please do not stand in narrow spaces, such as hallways, and make
sure not to block sensors.
Tidy up the area to be cleaned by putting
furniture, such as chairs, in their proper
place.
During the rst use, make sure each room
door is open to help DEEBOT fully explore
your house.
It may be necessary to place a physical
barrier at the edge of a drop to stop the unit
from falling over the edge.
10EN
Please remove all protective materials before use.
2
Place the Auto-Empty Station
Keep the area around the Auto-Empty Station clear of objects, especially objects
with reective surfaces.
0.05m (0.16’)
0.05m (0.16’)
0.8m (2.62’)
QUICK START
1
Installation
The sound of Click indicates proper installation.
Click
DOWNLOAD THE ECOVACS HOME APP
To enjoy all available features, it is recommended to control your DEEBOT
via the ECOVACS HOME App.
Under the Top Cover
Press and hold for 3 seconds to power on DEEBOT.
POWER ON DEEBOT
3s
1. Scan the QR Code under the Top Cover to download the App.
2. Search ECOVACS HOME to download the App.
ECOVACS HOME
11 EN
Short press to recall DEEBOT back to the Auto-Empty Station to charge.
6.5
CHARGE DEEBOTCONNECT DEEBOT WITH APP
Wi-Fi Indicator
Flashing slowly Disconnected to Wi-Fi
Flashing quickly Connecting the App
On Connected to Wi-Fi
Wi-Fi Network Requirements:
• You are using a 2.4 GHz or 2.4/5 GHz mixed network.
• Your router supports 802.11b/g/n and IPv4 protocol.
• Do not use a VPN (Virtual Private Network) or Proxy Server.
• Do not use a hidden network.
• WPA and WPA2 using TKIP, PSK, AES/CCMP encryption.
• WEP EAP (Enterprise Authentication Protocol) is not supported.
• Use Wi-Fi channels 1-11 in North America and channels 1-13 outside North
America (refer to local regulatory agency).
• If you are using a network extender/repeater, the network name (SSID) and
password are the same as your primary network.
• Please enable the WPA2 on your router.
Please be aware that the realization of intelligent functions such as remote
startup, voice interaction, 2D map display and control settings, and personalized
cleaning (depending on different products) requires users to download and use
the ECOVACS HOME App, which is constantly updated. You need to agree to our
Privacy Policy and User Agreement before we can process some of your basic
and necessary information and enable you to operate the product. If you do not
agree with our Privacy Policy and User Agreement, some of the aforementioned
intelligent functions cannot be realized through the ECOVACS HOME App, but
you can still use the basic functions of this product for manual operation.
Short press
12EN
OPERATE DEEBOT
Before rst vacuuming, please make sure DEEBOT is in the Auto-Empty Station
and fully charged. Short press to start cleaning and mapping.
Remove the Mopping Pad Plate/Module before mapping. When creating a map for the
rst time, please follow DEEBOT to help eliminate some minor issues.
For example, DEEBOT may get stuck under the furniture. Please refer to the
following solutions:
① Raise your low sitting furniture if possible;
② Cover the bottom of the furniture;
③ Set up Virtual Boundary via the App.
Note:
• Do not frequently remove washable mopping pads.
• Do not use a rag or any other object to scratch the Moping Pad Plate.
• When the ECOVACS HOME App prompts that the mopping pad needs to be
replaced, please replace it in time. Explore more accessories at ECOVACS
HOME App or at https://www.ecovacs.com/global.
Short press
REGULAR MAINTENANCE
Maintenance Frequency
To ensure optimal performance, perform maintenance tasks and replace parts at
the following frequencies:
Note: Explore more accessories in the ECOVACS HOME App or at https://www.
ecovacs.com/global.
Part
Maintenance
Frequency
Replacement
Frequency
Washable Mopping Pads After each cleaning Every 1-2 months
Side Brush Every 2 weeks Every 3-6 months
Brush Every week Every 6-12 months
Filter Every week Every 3-6 months
Navigation Module
Obstacle Avoidance Module
Anti-drop Sensors
Carpet Detection Sensor
Edge Sensor
Bumper
Charging Contacts
Universal Wheel
Every week /
Dust Container After each cleaning Every 1-2 months
Dust Container Filter Every 3-6 months
Every 3-6 months/After
multiple washes
13 EN
Maintain Dust Bin Maintain Brush and Side Brush
Brush
Side Brush
1
1
1
2
3
2
3
4
5
Note: Completely dry the Filter before use.
It is recommended that you purchase lters and cleaning tools from the
ECOVACS HOME App store or the ofcial ECOVACS online store at https://www.
ecovacs.com/global.
14EN
Maintain Dust Container and Its Filter
* Please make sure to air-dry the Dust Container before using it again.
Rinse the Dust Container with water or wipe it with a wet cloth.
* It is not recommended to wash the multi-cone structure. If needed, you can use
a wet cloth to wipe it and let it air-dry.
Remove the multi-cone structure.
Twist off the top and remove the Filter.
* It is recommended that you clean the Filter every 6 months. You can
wash and air-dry it for reuse, or purchase a new one.
Press the Container Release Button, and remove the Dust Container.
Press the Dust Release Toggle to open the bottom of the Dust Bin, and empty
the trash.
1
2
3
4
5
15 EN
Maintain Other Components Storage
Navigation Module
Bumper Charging ContactsEdge Sensor
Anti-drop SensorsObstacle Avoidance Module
Universal Wheel Driving Wheels
Press the Power Button for 5 s to power the robot off.
Make sure to fully charge and power OFF the robot before storing it. Recharge it
every 1.5 months to prevent the battery from over-discharging.
Please note that the robot cannot charge when powered OFF.
* when the robot is not in use, it is recommended to keep it powered ON and
charging, to prepare for the next cleaning cycle.
* If the battery becomes over-discharged or remains unused for an extended
period, the robot may not charge properly. In this case, please contact us for
assistance. Do not attempt to disassemble the battery on your own.
16EN
No. Malfunction Possible Cause Solution
1
The robot is not
able to connect to
ECOVACS HOME
App.
Incorrect Wi-Fi username and password entered. Make sure to enter correct Wi-Fi username and password entered.
The robot is not within range of your home Wi-Fi signal. Make sure that the robot is within range of your home Wi-Fi signal.
The robot is not in the conguration state.
When the robot is powered on, press the RESET Button and release it after
hearing the voice prompt for starting network setup. The Wi-Fi indicator
will ash, indicating that the robot is in the conguration state.
You are not using a 2.4GHz or 2.4/5 GHz mixed network.
The robot currently does not support 5 GHz networks. Please use the
2.4 GHz or 2.4/5 GHz options instead.
Incorrect app installed. Please download and install the ECOVACS HOME App.
2 The map is lost. The map might be lost if you move the robot when cleaning.
Move the robot to the front of the Station to retrieve the map.
Find the restored map in Map Management and tap “Use This Map” to
retrieve it. If this issue persists, please restart mapping.
3
Unable to create
the furniture map in
the App.
The robot does not start cleaning from the Station. The robot must start cleaning from the Station.
Moving the robot during cleaning might cause the map to
be lost.
During cleaning, do not move the robot.
Auto cleaning is not nished. Make sure the robot automatically return to the Station after cleaning.
4
No signal found.
Unable to return to
the Station.
The Station is incorrectly placed.
Please place the Station correctly according to the instructions in the
[CHARGE DEEBOT] section.
The Station is out of power or manually moved.
Check whether the Station is connected to the power supply. Do not
manually move the Station.
The robot does not start cleaning from the Station. It is recommended that the robot start cleaning from the Station.
The charging route is blocked. For example, the door of the
room with the Station is closed.
Keep the charging route clear.
5
The robot returns
to the Station
before it has
nished cleaning.
The room is so large that the robot needs to return to
recharge.
Please enable Auto Resume. For more details, please follow the App
instructions.
The robot is unable to reach certain areas blocked by
furniture or barriers.
Tidy up the area to be cleaned by putting furniture and small objects in
their proper place.
TROUBLESHOOTING
17 EN
No. Malfunction Possible Cause Solution
6
The robot is unable to
charge.
The Station is not connected to the power supply.
Make sure the Station is connected to the power supply and its indicator
light is on.
The robot’s Charging Contacts are not fully in contact with
the Station’s.
Make sure that the robot’s Charging Contacts have full contact with the
Station’s, and the button ashes. Check whether the robot’s and Station’s
Charging Contacts are dirty. Please clean these parts according to the
instructions in the [REGULAR MAINTENANCE] section.
The battery temperature is too high or too low.
Please charge and use the robot within the temperature range of 0-40℃.
The battery over-discharges due to prolonged periods of
non-use.
It is recommended that you use this product regularly. If charging issues
occur due to prolonged non-use, please contact customer service for
assistance.
7
The robot is very loud
during cleaning.
The Brush/Side Brush is entangled, or the Dust Bin/Filter
is blocked.
It is recommended to clean the Brush, Side Brush, Dust Bin, Filter, etc.
regularly.
The robot is in Strong Mode. Switch to Standard Mode.
8
The robot gets stuck
while working and
stops.
The robot is tangled with objects on the oor (electrical
wires, curtains, carpet fringing, etc.)
The robot will try various ways to free itself. If it is unsuccessful, manually
remove the obstacles and restart.
The robot might be stuck under furniture with an entrance
of similar height.
Please raise the furniture, set a physical barrier, or set a Virtual Boundary
via the ECOVACS HOME App.
9
During cleaning, the
robot may encounter
issues like a
disorderly route,
biased movement,
repeated passes over
the same spots, and
missing small areas.
(If a large area is
temporarily missed,
rest assured that the
robot will
autonomously return
to ensure thorough
cleaning.)
Objects such as wires and slippers placed on the ground
may obstruct the robot.
Before cleaning, please tidy up scattered wires, slippers, and other objects
on the ground as much as possible. If there is any area missed during
cleaning, the robot will correct it automatically. Please refrain from
interfering (such as moving the robot or blocking its route).
The Driving Wheels may slip on the ground when the robot
climbs steps, thresholds, and door bars, which can affect
its ability to navigate the entire home environment.
It is recommended to close the door of the affected area and cleaning
it separately. After cleaning, the robot will return to its starting location.
Please feel condent in using this method.
On freshly waxed or polished oors, as well as smooth
tiles, there may be less friction between the Driving
Wheels and the oor.
Please wait for the wax to dry before cleaning.
Due to different home environments, some areas cannot
be cleaned.
Tidy up the home environment to ensure that the robot can enter for
cleaning.
The Navigation Module may be dirty or blocked by foreign
objects.
Wipe it with a clean, soft cloth or clear any foreign objects.
18EN
No. Malfunction Possible Cause Solution
10
After returning to the
Station, the robot
does not empty its
Dust Bin.
Manually moving the robot back to the Station might not
trigger the Auto-Empty function.
It is recommended to let the robot return to the Station on its own. Please
do not manually move it.
In Do Not Disturb mode, the robot will not empty the dust
after returning back to the Station.
Turn off Do Not Disturb in the ECOVACS HOME App or manually start
dust-emptying.
If the above possible causes have been ruled out,
components of the Station may be abnormal.
Please contact customer service for assistance.
11
Auto-Empty
unsuccessful.
The outlet of the Dust Bin is blocked by foreign objects. Remove the Dust Bin and clear the foreign objects on the outlet.
12
Dust leakage occurs
during working.
The outlet of the Dust Bin is blocked by foreign objects. Remove the Dust Bin and clear the foreign objects on the outlet.
13
The Reservoir/Dust
Bin drops off.
It is not properly installed. Make sure it clicks into place.
14
Driving Wheels are
stuck.
Driving Wheels are tangled or obstructed by foreign
objects.
Rotate and press the Driving Wheels to check for any wrapping or
obstruction by foreign objects. If any foreign objects are found, please
clean them promptly. If this issue persists, please contact customer service
for assistance.
15
The robot fails to
perform Auto
Resume.
The robot is in Do Not Disturb mode. The robot cannot perform Auto Resume in Do Not Disturb mode.
The robot does not automatically return to the Station.
Auto Resume will not take effect if you manually move the robot back to
the Station.
16
The cleaning task is
not conducted at the
scheduled time.
The schedule has been canceled. Reschedule the cleaning task.
The robot's battery is low. Charge it.
The robot is in Do Not Disturb mode. The robot cannot perform scheduled cleaning in Do Not Disturb mode.
19 EN
TECHNICAL SPECIFICATIONS
Please use the mobile camera
to scan the QR code and
obtain the user guide.
Note: Technical and design specications may be changed for continuous product improvement.
Explore more accessories at https://www.ecovacs.com/global.
Output power of the Wi-Fi module is less than 100 mW.
Model DKX55/DKX56
Rated Input 20 V 1 A Charging Time 6.5 h
Auto-Empty Station CH2403
Rated Input 100 V ~ 50-60 Hz
Rated Input Current (Charging) 0.5 A Rated Output 20 V 1 A
Power (Emptying) 1000 W
DEEBOT Dimensions (L*W*H mm) 353*351*96
Auto-Empty Station Dimensions (L*W*H mm) 356*451*380
海森堡
AES
高标配 澳洲说明书【完整版】
Ecovacs Home Service Robotics Co., Ltd.
No.518 Songwei Road, Wusongjiang Industry Park, Guoxiang Street,
Wuzhong District, Suzhou, Jiangsu, China.
