Daniel Zhou, known also as Zhou Ke Yu, was born in the U.S. on May 17, 2002. He is a member of the Chinese group BEST, which debuted on 12 December 2019, and his first acting appearance was in the drama "Remember My Boy" in 2021 as the main lead, Zhang Yang. On March 1, 2021 his first single 'R.O.T.Y' was released.

In 2021, he participated in the Tencent survival show 'Produce Camp 2021' as a contestant, where he ranked 10th. On April 24 2021, he re-debuting as the member of the International boy group, INTO1.