Locked room, loud noise

Wu Jin relayed to the Headmaster that they would come back to investigate some other day. Since they did not find anything, it would be better for them to come back again. However, no sooner did Wu Jin say that they were leaving Headmaster Yuan's face turned grim.

He did not want them to go but at the same time, he couldn't tell them that it was around three in the morning when weird things started happening. 

Headmaster Yuan was torn between pleading with Wu Jin and asking him to stay back and letting them go while hiding the truth. 

"Headmaster, that thing is killing the teachers as well," the Deputy Headmaster behind him could not help but say. He knew what was making the headmaster hesitant but if this man continued to hide the truth then they all would be in danger!