It consists of seven people: Ma Jiaqi, Ding Chengxin, Song Yaxuan, Liu Yaowen, Zhang Zhenyuan, Yan Haoxiang and He Junlin.

1. Ma Jiaqi, born on December 12, 2002 in Zhengzhou City, Henan Province, is a male pop singer and actor in Mainland China, and a member (captain) of the male singing group Era Youth League. On January 21, 2021, Ma Jiaqi Participated in the show "Take the Move!" "Senior" released a group portrait poster and announced that it will be broadcast on Dragon TV and BesTV every Friday at 22:00 starting from January 29th.

2. Ding Chengxin, born on February 24, 2002 in Anyue County, Ziyang City, Sichuan Province, is a male pop singer, film and television actor in Mainland China, and a member of the boy singing group Era Youth League. In 2013, he entered the public eye for the first time in the TF family's self-produced variety show "TF Youth GO". In 2015, he participated in the recording of the TF family's self-produced variety show "Friday Trainee".

3. Song Yaxuan, born on March 4, 2004 in Binzhou City, Shandong Province, is a male singer and actor in Mainland China and a member of the boy singing group Era Youth League. In October 2015, he participated in Guangdong TV's children's program "Really!" Very fun."

4. Liu Yaowen, born in Chongqing on September 23, 2005, is a male pop singer and actor in Mainland China and a member of the boy singing group Era Youth League. In August 2017, participated in the TF Family Summer Carnival.

In May 2018, the online drama "Nian Nian" she participated in premiered on Tencent Video; in August, the group won the "Honorary Lifetime Member of the Fake Breasts Association" award at the 3rd Fan Carnival; in October, He held a debut concert with the group and made his official debut.

5. Zhang Zhenyuan, born in Chongqing on April 16, 2003, is a Chinese pop male singer and actor, and a member of the boy singing group Era Youth League. In 2015, he starred in the fantasy movie "Tears in the Sky"; in the same year, he joined the TF family and became a trainee. In November 2016, he won the "Miaopai Star Award" in the first Sina Weibo Fan Carnival with the TF family.