Mu Ziyang, whose real name is Li Zhenyang, was born on April 21, 1994 in Heze City, Shandong Province. He is a male singer and model of pop music in mainland China, and a member of the male singing group ONER. His parents do business and there are two sisters at home. He graduated from the Beijing Institute of Clothing Technology and worked as a model. He also participated in fashion shows in Milan.

In 2016, Yue Yue and Mu Ziyang, Bu Fan, and Ling Chao began a two year trainee career. On October 10, 2017, as the trainee of BC221, the first single of the group "If You Can Feel My Feeling" was released. In January 2018, participated in the iQiyi idol boy group competing in the reality show "Idol Trainee", and finally achieved the 27th place; on April 16, Yue Yue and Mu Ziyang, Bu Fan, and Ling Super officially formed the male singing group "ONER", which is the first debut group of Qin's Entertainment trainee brand BC221. Due to his late entry, he did not have boy skills and exercise intensity, resulting in a knee injury. He ran across major hospitals in Beijing and saw more than a dozen doctors, He had knee surgery during his trainee days. KWin and Pinkray went to Thailand together after they were eliminated from Idol Producer.