Chen Shi and Lin Dongxue stood on the balcony between the flights of stairs for a while. He sent a text message to Xu Xiaodong asking him to see what Xue Chengyi was doing.

Xu Xiaodong replied, "He’s in the room."

"Go!"

The two returned and Chen Shi rushed past the cordon as he shouted, "Who’s inside?!"

Xue Chengyi, who was mopping the floor with the mop, turned his head and smiled sheepishly. "I saw that the ground was dirty so I came in and mopped."

Chen Shi said with a cold face, "I have said that there are important clues in the room and that no one is allowed in. Doesn’t that include you? Are you destroying the evidence for the murderer?”

"I... I’m not!"

Lin Dongxue remarked, "Obstruction of justice. Sorry, you have to make a trip with us.”

Xue Chengyi was crying and pleaded. "Don't... Don't give me such a...