Crey was spectating, so he can verify the wall was made correctly the last turn.
This is the screenshot of the wall bypass:
There was no hole on any of the two sides, and I moved the 16 infantries 8 militias that I had in for take cities nothing else and somehow I get the cities but he bypass the wall and also breaks it at the same turn.
I know syrian once force Nadveep charan to share infinite range tricks and he also know how to bug money hacks, so it is nothing new that he also knows how to bypass walls........