Qing succession and inheritance policies made it difficult for empresses and their relatives to build power at court, as they had in the Han dynasty for example. Threats to imperial power usually came from within the imperial clan. When the young Fulin was chosen to succeed his father Hong Taiji in September 1643, two "prince regents" were selected for him: Hong Taiji's half-brother Dorgon (1612–1650) and Nurhaci's nephew Jirgalang (1599–1655). Soon after the Manchus had seized Beijing under Dorgon's leadership in May 1644, Dorgon came to control all important government matters. Official documents referred to him as "Imperial Uncle Prince Regent" ("Huang shufu shezheng wang" 皇叔父攝政王), a title that left him one step short of claiming the throne for himself. A few days after his death, he received a temple name (Chengzong 成宗) and an honorific posthumous title (Yi Huangdi 義皇帝, "Righteous Emperor"), and his spirit tablet was placed in the Imperial Ancestral Temple next to those of Nurhaci and Hong Taiji. In early March 1651 after Dorgon's supporters had been purged from the court, these titles were abrogated.