Tanjing 1977

No one can know Jia Lei's age, and it has never been made public. My personal guess is between 1976 and 1978. You can look at her resume.

They all participated in the Youth Song Competition in 2000, so they are about the same age. It's just that TanJing won the gold medal in the pop group at once. That time, Jia Lei didn't get the ranking, and Jia Lei took part in the Youth Song Competition for the third time and won the gold medal in the national group.