How to perform regional editing on the Xiaomi Robot Vacuum S20?

To edit the map for the robot vacuum, please refer to the following methods:
Merge: Open the Mi Home/Xiaomi Home APP >> select [Device card] >> tap the three-dot icon at the upper right corner >> [Map management] >> tap [Area Editor] >> select two adjacent areas >> select [Merge].
Divide: Open the Mi Home/Xiaomi Home APP >> select [Device card] >> tap the three-dot icon at the upper right corner >> [Map management] >> tap [Area Editor] >> select [Divide] >> select an area to be divided (When dividing, please pay attention to the two endpoints of the dividing point and they need to be on the boundary of the area to be divided) >> tap [√] after confirm >> rename the area.