C479 Something Happened to Tangtang

Qiao Yihuan didn't look at his phone again. He went upstairs expressionlessly and returned to the classroom.

Qii Chu had just sent Mi Lih back to Liberal Arts Building. When he sat down, he saw Qiao Yihuan walk in from the back door. He subconsciously looked behind him.

There was no one there.

Qii Chu frowned