query: country_of_citizenship empress liu 
supports: Huan Xuan () (369  19 June 404), courtesy name Jingdao (), nickname Lingbao (), formally Emperor Wudao of Chu (), was a Jin Dynasty (265-420) warlord who briefly took over the imperial throne from Emperor An of Jin and declared his own state of Chu in 403, but was defeated by an uprising led by the general Liu Yu in 404 and killed. He was the youngest son of Huan Wen. A courtesy name ("zi"), also known as a style name, is a name bestowed upon one at adulthood in addition to one's given name. This practice is a tradition in East Asian cultures, including China, Japan, Korea, and Vietnam. Emperor An of Jin (382419), personal name Sima Dezong (), was an emperor of the Eastern Jin Dynasty (265-420) in China. He was described as so developmentally disabled that he was unable to speak, clothe himself, or be able to express whether he was hungry or full. He was created crown prince in 387 and ascended the throne in 397. Because of his disability, the actual power was controlled by his uncle, Sima Daozi, Prince of Kuaiji. During his reign, regents and warlords dominated the Jin regime. Revolts by various governors also ravaged the land. From 398 to 403, there were constant revolts and civil war campaigns. In 403, the Jin regime was usurped by the warlord Huan Xuan, and while Emperor An was restored in 404, the Jin Dynasty was nearing its end. With the warlord Liu Yu as the actual power, Jin destroyed Southern Yan and Later Qin, greatly expanding its territory. However, with Liu Yu up in the north, the renegade governor of Guang Province (, modern Guangdong and Guangxi), Lu Xun, rebelled and threatened the capital city Jiankang, before Liu Yu returned and crushed the revolt. In 419, Emperor An was strangled under the order of Liu Yu and replaced with his brother Emperor Gong, who would be the last emperor of the dynasty, before Liu Yu would take the throne and establish the Liu Song Dynasty. Empress Liu (  , personal name unknown ) was an empress of the short - lived Chinese state Chu . Her husband was Chu 's only emperor , Huan Xuan ( Emperor Wudao ) . She was the great - granddaughter of the Jin official Liu Qiao (  ) , and her father Liu Dan (  ) was also an official . She married Huan Xuan before he became a major warlord , although the exact time was not known . After Huan Xuan seized the throne from Emperor An of Jin in 403 , he created her empress in spring 404 . She was described as one who had good judgment of character , and she , suspecting the intentions of the general Liu Yu , told Huan Xuan that Liu Yu would not be his subordinate long and should be killed . Huan Xuan refused . Later in 404 , however , Liu Yu started an uprising that eventually forced Huan Xuan from the capital Jiankang and led to his downfall and death . It is not known what Empress Liu 's fate was . Huan Wen () (312373), courtesy name Yuanzi (), formally Duke Xuanwu of Nan Commandery (), was a general of the Jin Dynasty (265-420). He is commonly viewed as one of the greatest generals since Jin's loss of northern China, as he led the campaign that destroyed Cheng Han and annexed its lands to Jin, and had some successes against the northern states Former Qin and Former Yan (although both campaigns ultimately ended in failure, perhaps due to his overcautiousness). After his death, the Huan clan would be entrenched in the Jin power struction for decades, after his son Huan Xuan temporarily usurped the Jin throne in 403 as the emperor of Chu (), he was posthumously honored as Emperor Xuanwu of Chu with the temple name of Taizu ().
candidates: china chu japan jin dynasty liu song dynasty song dynasty yan
answer: china