In 557, Chen Xu's uncle and Chen Chang's father Chen Baxian founded a new dynasty as Emperor Wu of Chen with his capital at Jiankang. He requested that Western Wei's successor state, Northern Zhou, return Chen Chang and Chen Xu to him, but Northern Zhou, while initially agreeing, did not do so during Emperor Wu's lifetime. In 559, Emperor Wu died, and Chen Xu's older brother Chen Qian, Prince of Linchuan, as Emperor Wu's only close male relative in the realm, took the throne as Emperor Wen of Chen. In 560, Northern Zhou began making overtures to return Chen Xu to Chen. In 562, Emperor Wen, who had remotely created Chen Xu the Prince of Ancheng, traded the city of Lushan (魯山, in modern Wuhan, Hubei) to Northern Zhou in exchange for Chen Xu's return. Initially, Chen Shubao and his mother Princess Liu were not returned, but after further negotiations by Emperor Wen, were returned. Chen Shubao was designated as Chen Xu's successor. He held minor offices during Emperor Wen's reign.