Dong Si Yi is a Chinese singer, actress, and host. She graduated from Beijing Modern Music College. From 2000 to 2009, Dong Siyi began to serve as the host of Hangzhou TV Children’s Channel.

In 2005, she participated in the Hunan Satellite TV audition entertainment program " Super Girl " and won the top 50 in Hangzhou singing district. In 2013, she was admitted to the Jazz Singing Department of Beijing Institute of Modern Music. During her sophomore year at the Beijing Modern Conservatory of Music, she participated in Dragon TV's original girl group inspirational growth program " Come on! "Pretty Girl " and entered the top 12 nationwide in the show.

On November 11, 2016, she made her debut single with singer-songwriter Chan Lolita with the song "Heard". In June 2017, she joined the variety show "The King of the Kings" and joined the Hu Xia team as a star student incarnation. In September, she played Fang Sansan in the online sitcom "The King of the Stubborn". The participating programs also include "Toasting and Drinking". In 2017 she also starred in the web drama "The Stubborn King. In 2021, she was awarded The 5th Jinguduo Network Film and Television Festival Annual New Force. Edit Biography