C22 Spatial collapse

Xia Mingyuan opened the door, waved at me, and then opened the door. He sat back down on the chair and started flipping through the ancient book in his hands.

"Master, I'm here."

"En, take a seat first, I will explain slowly to you."

I saw that Xia Mingyuan didn't look like he was joking, so I finally relaxed and sat down. However, after I sat down