How come no one saved the death of King Zhao Wuling?

In the twenty-seventh year of King Zhao Wuling (299 BC), King Zhao Wuling passed the country on to his second son, Zhao He, as King Zhao Huiwen. And he calls himself "Master Father". After abdication, King Zhao Wuling gradually lost his former power. Later, Gongzizhang fought for the throne and launched a rebellion in the sand dunes, but was defeated by the army led by Li Dui and Gongzicheng. Gongzi Zhang fled to the Sand Dune Palace where King Wuling of Zhao lived. Li Dui and Gongzi Cheng sent troops to attack the father's palace and kill Gongzi Zhang. They were afraid that their master's father would settle accounts in the future, so they besieged his master's father in the palace. It took more than three months to starve to death at Sand Dune Palace. This is how King Wuling of Zhao died in internal strife.

King Zhao Wuling was besieged for so long, but no one loyal to him came to rescue him, no ministers came forward, and no aid forces came to intervene. This certainly shows the power of the young master's party. It also reflects that most people at that time had a negative attitude toward King Zhao Wuling, at least they did not understand, laughed at, and were afraid. Moreover, there are many such people, representing the position of a large number of people in the court. They have low self-esteem, are conservative, and reject the changes of King Zhao Wuling.