"e;Smile queen Cai Bobo: Invincible love"e; Content abstract: In order to creatively complete the investigation task given by teacher, Cai Bobo may spend a lot of thought, just like a private detective. To be honest, the contents of her survey are genuine and her investigation report is perfect. Unfortunately, when she put these findings available to the public, she was teased as putting "e;public righteousness above family loyalty"e;. Cai Bobo did not expect this and her heart was broken.