23 years old. According to the personal profile of Xu Jiawen, we learned that Xu Jiawen was born in Wuxi City, Jiangsu Province on June 22, 1999. He majored in musical theater at the 18th level of Nanjing University of the Arts. He will appear in musical theater performances on February 23, 2023, as of June 10, 2023. Today, Xu Jiawen is 23 years old.