Zheng Kai (simplified Chinese: 郑恺; traditional Chinese: 鄭愷, born 17 April 1986), also known as Ryan Zheng, is a Chinese actor and television personality. He graduated from Shanghai Theatre Academy Performance Institute in 2008. During university, he was roommates with famous actors: Du Jiang (杜江), Chen He (陈赫) and Zhang Dianlun (张殿伦). After graduating, he signed with Huayi Brothers Media Corporation. Zheng is best known for being a cast member in the variety show Keep Running. He is also known for starring in films So Young, My Lucky Star, Personal Tailor and Ex-Files. On 21 May 2020, he announced his marriage with his wife, Vivi Miao. The couple have two children: a daughter (born October 2020) and a son (born June 2022). Zheng ranked 86th on Forbes China Celebrity 100 in 2015, 67th list