Why did Emperor Heng of the Han Dynasty succeed to the throne?

Lv Hou weakened nine countries with the same surname, destroyed Zhao, Yan, Liang and Huaiyang, and cut off the two counties of Langya, Jin 'an and Xue Jun of Chu. According to statistics, there are 55 cities in Qi and 37 cities in Chu. The father died and the son succeeded to the throne, but the elder brother and younger brother were weakened to varying degrees. The rest are Wang Heng and Wang Chang in Huainan. Wu is Liu Zhongzi. Liu Bang confirmed the death of his father and the succession of his son. With the right, there are three branches: Qi, Dai and Huainan. Because Chang Lu and Lu Shi are friends and young, they are excluded. Therefore, besides Wang Qi herself, Wang Qi has six sons. Liu Xingju, the king of Jibei, and Liu Zhang, the king of Chengyang, also made great contributions to the destruction of Lu Zhongli. The Richie system must be divided into more vassal States. The finance of the central government in the Han Dynasty must be exhausted. Imagine after the establishment of the King of Qi. Liu Xingju led Qi 72 cities, Zhao 79 cities, Liang 48 cities, Huaiyang 47 cities, Yan 35 cities, Linjiang 44 cities (now Changsha in Wu) and Nanyang 36 cities. Hanzhong center is weak. The central aristocracy went bankrupt. On behalf of Wang Heng. The acting king and prince are underage. The central government naturally recovered more than 50 cities on behalf of the country. The country destroyed by Lv Hou has no suitable successor. Only incorporated into the Han dynasty.