C510 Little Clue

"Oh, I see. Then this is the assembly room in the middle."

"Hahaha, Mr Yan must be joking. Actually, it's nothing. It's just that in order to make a difference, I have left such a large empty space in the middle. Normally, when I have nothing to do, I would still run in there."

After saying that, he opened the door on the left and entered. After Su followed him in