Overview
The Gengshi Emperor (; died AD 25), born Liu Xuan, was an emperor of the Han dynasty restored after the fall of Wang Mang's Xin dynasty brought on by the Lülin. He was also known by his courtesy name Shenggong and as the King or Prince of Huaiyang, a posthumous title bestowed upon him by Emperor Guangwu of the Eastern Han. The Gengshi Emperor was viewed as a weak and incompetent ruler, who briefly ruled over an empire willing to let him rule over them, but was unable to keep that empire together. He was eventually deposed by the Chimei ("Red Eyebrows") and strangled a few months after his defeat.
Traditional historians treat his emperor status ambiguously—and sometimes he would be referred to as an emperor (with reference to his era name—thus, the Gengshi Emperor) and sometimes he would be referred to by his posthumous title, Prince of Huaiyang. The later title implied that he was only a pretender and the Eastern Han was the legitimate restoration of the earlier Han. The regime of the Gengshi Emperor is known in historiography as the Xuan Han, after his personal name Liu Xuan.
Liu Yan and new emperor
Gengshi was a descendant of Emperor Jing of early Western Han dynasty, via the lineage of Liu Mai, Prince Ding of Changsha. His third cousin, Liu Yan, was a prominent general in the rebellions against the reign of Wang Mang in the short-lived Xin dynasty. In the year 22 AD, many rebel leaders were jealous of Liu Yan's capabilities despite many of their men admiring Liu Yan and wanting him to become the emperor of a restored Han dynasty. They found Liu Xuan, then another local rebel leader who was claiming the title of General Gengshi at the time and was considered a weak personality, and requested that he be made emperor. Liu Yan initially opposed this move and instead suggested that Liu Xuan carry the title "King of Han" first (echoing the founder of the Han dynasty, Emperor Gaozu). The other rebel leaders refused, and in early 23, Liu Xuan was proclaimed emperor. Liu Yan became prime minister.
Infighting, defeat of Wang Mang and the capture of Chang'an
The first major incident involving infighting in the Gengshi Emperor's regime happened shortly after the Battle of Kunyang which would lead to the demise of Wang Mang and the Xin dynasty. The Gengshi Emperor was fearful of Liu Yan's capabilities and keenly aware that many of Liu Yan's followers were angry that Liu Yan was not made emperor. Liu Ji, was particularly critical of the Gengshi Emperor.
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