 Because Chen Xu was not available to offer sacrifices to their father Chen Daotan, Emperor Wen created his own son Chen Bomao (陳伯茂) the Prince of Shixing instead, changing (remotely) Chen Xu's title to Prince of Ancheng.In 560, Western Wei's successor state Northern Zhou began to make overtures to Chen, offering to return Chen Xu.In 562, after Emperor Wen gave Northern Zhou the city of Lushan (魯山, in modern Wuhan, Hubei) in exchange, Chen Xu was allowed to return to Chen.