C143 We're Your Friends

Su Zishan saw that Gu Zichen didn't answer her, so she had to give up on this topic. Although she didn't know why, he was sure that Gu Zichen wouldn't fall in love with her.

Gu Zichen was silent for a while before he suddenly said, "I think it's getting late. You guys go back first. I'm going to the laboratory too."

Su Zishan looked at Gu Zichen. She suddenly realized a problem