Cao Huandong works as a teacher in Beijing Normal University. Cao Huandong, a student of Columbia University. After graduation, he joined the psychology department of Beijing Normal University as a teacher, and participated in the ninth season of Super Brain in June 2022. On July 1 day, the game strategy game reality show "Juvenile Round Fish Island" was broadcast.

Cao Jidong is a native of Huangpu District, Shanghai and grew up in Shanghai. I began to learn olympiad mathematics in grade one and programming in grade three. Senior three studied in the competition class of Jiaotong University High School, one of the four famous schools in Shanghai; Studying abroad at the undergraduate stage, studying three majors at the same time: mathematics, statistics and finance;