Originally, Ming Shu wanted to protect the people in the East District. This was her base. She couldn't let her base be destroyed.
However, they hurt Ye Ji. Ming Shu didn't want to put any effort into them anymore.
Ming Shu retracted all her orders. She also retracted the men she placed at the wall. She didn't care what other people wanted to do anymore.
She just let the matter run by itself.
If the people of the East District wanted to hand her over, they needed to catch her first.
Things were at a standstill for three days. Finally, the West District couldn't wait anymore and attacked the East District.
By right, with the defensive wall, the West District would not be able to enter the East District so easily. But, someone opened one of the gates. There was a betrayer in the East District.