The song "In My Name" sung by x9 Youth League seems to have been silenced only by Xiao Zhan. X9 Youth League is a popular male singing group in Mainland China, consisting of Zhao Lei, Xia Zhiguang, Peng Chuyue, Wu Jiacheng, Gu Jiacheng, Guo Zifan, Xiao Zhan and Yan Xujia.

In 2015, he participated in the Zhejiang Satellite TV talent development inspirational program "Burning Boy" and was selected to be a contestant in the recording program. In 2016, he starred in the youth campus superpower online drama "Super Star Academy"; on September 24, the group's first single "In My Name" was released.

On September 28, a debut press conference was held and the official debut was announced; on November 6, he won the Newcomer Group Award of the Year in the Star Power List of the "First Fan Carnival Annual Ceremony"; on December 10, he won the " Tencent Video Starlight Awards” Youth Trending Boy Group of the Year Award. On April 2, 2017, the group's first concert "In My Name" was held on the Shanghai Grand Stage.

In the same year, they won the Most Popular Group Award at the Asia Golden Melody Awards. In 2019, group members Xia Zhiguang, Zhao Lei, Peng Chuyue, and Yan Xujia participated in the Tencent Video Youth Group Training Program "Creation Camp 2019" as contestants. In the end, Yan Xujia, Xia Zhiguang, and Zhao Lei ranked 3rd, 4th, and 10th respectively. As a result, he joined the men's group R1SE.

In September 2020, Chen Zexi confirmed that he had quit the X9 Youth League and focused on rap music and fashion.