Male, 17 to 18 years old, Ling Dong's eldest nephew, a rebellious and willful academic scumbag, known as "Zha Zang Hui", with a passion like "fire".A big boy who loves to be cool, has a lot of fun, and has an unruly personality.He is smart and witty and likes to help others, but he never puts his mind on studying.When he first appeared on the scene, Tie Zhengzheng was ranked last in the school. In the process of persecuting his second cousin Ling Dong, they got to know each other and became friends, pursuing their dreams together.