I Just Entered College and My Arrogant Senior Sister Wanted to Get My Certificate with Me

The day before school started, Gu Chen was reported to the police station for looking at study materials in an Internet cafe. Gu Chen: Uncle policeman, I am really a law-abiding citizen! When I reported in the next day, I found out that the beauty of Peking University... Was the heroine of the study materials? ! What's even more shocking is that Gu Chen discovered that the school beauty was actually his childhood sweetheart next door. He had wanted to marry her when he was five or six years old. "That was all a childhood joke!" "Are you kidding me? I've already received my certificate." Roommate:? ? ? Are you serious?