Who sang Chinese folk songs first?

Sun Hao. According to relevant information, "Chinese Folk Song" is a song written by Zhang Xiaosong and Feng Xiaoquan, composed by Feng Xiaoquan, and sung by Sun Hao. In June 1994, "Chinese Folk Song" sung by Sun Hao won the first prize in the 6th National Young Singer Television Grand Prix. In 1995, the song appeared on the stage of the CCTV Spring Festival Gala, and in the same year won the Central People's Broadcasting Station's "95 Top Ten Golden Melody Award" and the Beijing Music Station's "Chinese Song Ranking" Golden Melody Award. In October 2008, the song won the medal of "Popular Golden Songs in the Thirty Years of Reform and Opening Up".