Sweeping Tsinghua: I’m a Janitor Who Solved the World’s Math Problems

Su Chen transmigrates to a parallel world. He discovers that he has returned to the age of seventeen and has even activated a System!

One day, his mother, a cleaner at Tsinghua University, takes sick leave, so Su Chen fills in for her and cleans the school's corridors.

There, he happens to come across a world-class math problem that a professor in the mathematics department has left in a classroom to show students that learning has no bounds.

Three minutes later, Su Chen writes down the answer and walks away.

The next day, the mathematics professor stares at the answer left on the blackboard and falls into deep thought.

A week later, the entire mathematics faculty finally verifies that Su Chen's answer is correct.

But in the meantime, the whole world has been left pondering the existence of a cleaner's genius son!

This novel and its characters are entirely fictional. Any similarities are purely coincidental. Do not imitate.