Zhou Jie Qiong, known as Kyulkyung in South Korea, is a Chinese actress and singer signed under Pledis Entertainment. She was a member of the project girl group I.O.I which was formed through the 1st season of the Korean survival show "Produce 101". She was also a former member of the disbanded girl group Pristin and its sub-group Pristin V.

Zhou attended the Affiliated Secondary School of the Shanghai Conservatory of Music, where she specialized in the pipa. In 2009, after being scouted by Pledis Entertainment in Shanghai, she moved to South Korea. In 2017, she graduated from the School of Performing Arts in Seoul.
In January 2018, she started her career in China as a dance mentor in the survival show "Idol Producer".
On September 6, 2018, Zhou made her chinese solo debut with her digital single, "Why".
It was confirmed that Zhou would make her acting debut in the historical mystery drama "Miss Truth".