C230 Exclamations

The sound of the word "good" that Chen Hui replied Cai Qin was a little loud. Otherwise, it would have been impossible for there to be any faint echoes.

It was clear that Chen Hui was doing it so loudly on purpose to probe the surrounding space.

An echo resounded. It was obviously a place with a lot of space.

Not long after, Cai Qin opened a door and entered a room