Dong Dongdong. According to the query on Wenren.com.

1. Dong Dongdong, born in Beijing, China in 1981, graduated from Beijing Film Academy and is a composer and musician in Mainland China. Tan Xuan is just a male songwriter from mainland China who graduated from Sichuan Conservatory of Music, a general music school.

2. Dong Dongdong began composing music for movies, TV series, cartoons, and advertisements in 2003. In 2009, he composed the ending song "Where Has the Time Gone" for the TV series "Lao Niu's War", which became popular all over the country. Tan Xuan only served as a music producer and music editor for multiple columns in Hunan Radio and Television Media. No famous and influential works. So Dong Dongdong is awesome. On January 26, 2022, the 2022 Beijing Winter Olympics promotional song "The Most Beautiful Chinese Painting" sung by Dong Dongdong and Chen Xi, jointly created by the Times Youth League, was officially launched.