In 195 BC, Han Gaozu Liu Bang died in Changle Palace, the same year Liu Ying took the throne, but Liu Ying was born weak, the power of the government was in the hands of his mother Empress Lü, because of the cruel means and arrogance of the empress dowager, the Han Hui Emperor Liu Ying became depressed, in 188 BC, Han Hui Emperor died, so Empress Lü established the Young Emperor, because the young Emperor Was young, the power of the government was in the hands of Empress Lü.
Although the power of the imperial government was in the hands of Empress Lü, she did not dare to change Liu's Jiangshan into the Lü family's world, because the Han Dynasty still had many princes of the Liu clan in various places, and these princes had their own soldiers and horses, and Empress Lü was also very jealous, in order to consolidate the rule of the Lü clan, Empress Lü disregarded Liu Bang's oath of "White Horse Alliance" (not the king of the Liu clan, the world was in a common crusade), and made her nephew lü clan a prince to oppose the princes of the Liu clan.
After Empress Lü died of illness, Zhu Lü was afraid of being persecuted by Liu Shi and planned to rebel and want to seize Liu Shi's power, this conspiracy spread to Liu Xiang, the King of Qi of liu clan, in order to defend Liu Shi's Jiangshan, he decided to raise an army to attack Zhu Lü, and the princes of Liu Clan took the initiative to send troops to attack Lü Shi, and then the lieutenant Zhou Bo's right chancellor Chen Ping used a trick to obtain the military power in the hands of Lü Shi, so he led Liu Zhang, the Marquis of Zhu, into the palace to kill Xiang Guo Lü, and thus the rebellion of Zhu Lü was put down.
Although the sub-feudal system has drawbacks, but under the special conditions of the Zhulu Rebellion, the sub-feudal system played a great role, if the early Han Dynasty was directly a county system, liu clan did not have military power in their hands, it is very likely that Liu's Jiangshan would be usurped by the Lü clan, and there would be no four-hundred-year-old state of the Han Dynasty.