C1368 He Didn't Expect It

Chu Qing strained to piece together the events leading up to his unconsciousness. He recalled his efforts to recover his strength when, unexpectedly, several people burst in. They assaulted him, and the next thing he knew, he was waking up here.

So...

Chu Qing sat up and glanced over to see a special material iron door, locked from both inside and outside