中二病 [zhōng èr bìng] n. Eighth grade syndrome. Originated from Japan, this term describes adolescent egocentrism and intuitive, emotional thinking. Adults with this syndrome are imaginative at best and self-centered at worst.
[Note: Listen to Bai Baihe’s “The Story of A Teenage Girl with the Eighth Grade Syndrome Growing Flowers“.]
Haha China 