Song Yuqi (born September 23, 1999), known mononymously as Yuqi (Korean: 우기), is a Chinese singer-songwriter and record producer under CUBE Entertainment. She is active as a soloist in China and a member of the South Korean girl group i-dle (아이들) , which debuted in 2018. In 2019 and 2021, she was one of the co-hosts for the Chinese reality TV show Keep Running, and the main host on KakaoTV reality show Learn Way.