Big C refers to traffic star Cai Xukun, which comes from Cai Xukun's participation in the talent show "Idol Producer" where he starred in the program theme in the C position (that is, the position with the most pictures and the front and center position) Qu EEII, so it is called giant C.

Cai Xukun (KUN), born on August 2, 1998 in Wenzhou, Zhejiang, native of Huaihua, Hunan, is a male singer, original music producer, MV director, and actor in Mainland China.

On April 13, 2021, the new personal album "Mystery" was released. In the same year, he won the TOP1 of the 2020 Tencent Entertainment White Paper Male Star Commercial Value List, the most influential singer-songwriter of the year at the TMEA Tencent Music Entertainment Festival, etc. Multiple honors.

Character evaluation (Xinhuanet):

Cai Xukun is a stage king with excellent singing and dancing skills, and he is also a young man of the times with a strong sense of social responsibility. As a singer with high traffic and positive energy, he has always hoped to shift fans' attention to social responsibility through his own efforts. Therefore, he has always placed public welfare undertakings in an important position, and used his actual actions to continuously help public welfare undertakings and dedicate his love.

Reference for the above content: Baidu Encyclopedia-Cai Xukun