Kings of the Han dynasty
The kings from other dynasties (, "yìxìng wáng") were mostly remnants of the rebellion against the Qin dynasty. Following the Dazexiang Uprising, many noblemen rose in rebellion. Heirs, pretenders, and warlords called themselves "kings" and claimed sovereignty as continuations of the six states previously suppressed by Qin. Among these, Chu was the most powerful. However, its rightful ruler Huai II was assassinated on the orders of the warlord Xiang Yu and the 18 Kingdoms Xiang had formed rose in rebellion against him. Liu Bang, king of Han, ultimately defeated Chu and established the new Han dynasty. The kings who had sided with him were then permitted to maintain their titles and lands. A few other kingdoms were also formed by Liu Bang for generals and favorites.
Emperor An of Han
Emperor An did little to revive the withering dynasty. He began to indulge himself in women and heavy drinking and paid little attention to affairs of state, instead leaving matters to corrupt eunuchs. In this way, he effectively became the first emperor in Han history to encourage corruption. He also trusted his wife Empress Yan Ji and her family deeply, despite their obvious corruption. At the same time, droughts ravaged the country while peasants rose up in arms. In 125, Emperor An died while travelling to Nanyang. He was only 31.