In the letter, Changshan stepped into the room and looked around with gloomy eyes. He didn't find anything different. If there was anything wrong, his men had searched it four times before, and should have found it!

it's clear that there's nothing unusual, but zhongchangshan's heart doesn't feel right. Maybe it's that person's pressure is too great. Zhongchangshan comforts himself. At last, he doesn't feel at ease. He asks his staff to knock on the walls one by one, even the smooth floor under his feet.

dingdong, crackling and banging sound was heard in the room. The echo converged into a noise, which could not be recognized as empty or...