Emperor Xuan of Chen (陳宣帝) (530–582), personal name Chen Xu (陳頊), also called Chen Tanxu(陳曇頊), courtesy name Shaoshi (紹世), childhood name Shili (師利), was an emperor of the Chen dynasty of China. He seized the throne from his nephew Emperor Fei in 569 and subsequently ruled the state for 13 years. He was considered to be a capable and diligent ruler, who at one point militarily expanded at the expense of the Northern Qi. After the Northern Qi fell to the Northern Zhou in 577, however, the Chen dynasty was cornered, and soon lost the gains it had previously made against Northern Qi. Emperor Xuan died in 582, leaving the state in the hands of his incompetent son Chen Shubao, and by 589, the Chen dynasty would be destroyed by Northern Zhou's successor state Sui dynasty. Background Chen Xu was born in 530, as the second son of Chen Daotan (陳道譚), a commander in the Liang Dynasty palace guards. His mother's name is not recorded in history. Chen Daotan died in 548 or 549, while commanding the guards in resisting a siege of the palace at the capital Jiankang by the rebel general Hou Jing. After the palace fell to Hou in 549, Chen Xu's older brother Chen Qian and cousin Chen Chang were imprisoned by Hou, because Chen Chang's father, the general Chen Baxian, had joined forces with Wang Sengbian, a general under the command of Xiao Yi the Prince of Xiangdong in resisting Hou. It is unclear whether Chen Xu was imprisoned as well. In 551, Wang, with Chen's assistance, defeated Hou and recaptured Jiankang. Xiao Yi subsequently declared himself emperor (as Emperor Yuan), but set up his capital at Jiangling (江陵, in modern Jingzhou, Hubei) rather than returning to Jiankang, which he put under the command of Wang. As part of this alignment, Chen Baxian was given the post of defending Jingkou (京口, in modern Zhenjiang, Jiangsu). Emperor Yuan then summoned Chen Chang and Chen Xu to Jiangling to serve in his administration—and also to serve as hostages. Both were given mid-level positions. He also gave Chen Xu a wife—his niece Liu Jingyan. (Chen Xu had previously married a wife, Lady Qian, while he was at his home commandery of Yixing (義興, roughly modern Huzhou, Zhejiang), but Lady Qian did not accompany him to Jiangling) In 554, rival Western Wei attacked Jiangling and captured it, executing Emperor