You should know King Wuling of Zhao. He was a monarch of Zhao in the Warring States Period. The monarch starved to death in the sand dune palace. What happened? This is because King Wuling of Zhao wanted to pass the throne to his second son, but others did not agree, so others decided to rebel and imprisoned King Wuling of Zhao in the sand dune palace here, so King Wuling of Zhao was starved to death alive. In fact, this is the famous dune coup in history. Although Zhao Wuling I was famous, he finally died in Dune Palace with a grudge.
Another point is that we know that Qin Shihuang finally died in Dune Palace. Qin Shihuang, who was over 500 years old, went to Dune Palace in Hebei Province during his fifth tour of the people's feelings, and died here because of his illness. It was because of Qin Shihuang's death that Reese and Zhao Gao, the most trusted housekeeper around him, intercepted the letter left by Qin Shihuang to his son Fuxi before his death. Faced with the temptation of interests and money, Li Si gave in. Because of this, the Daqin Empire was overwhelmed and died two years later.
Anyway, I think the most important thing for a generation of kings is the ability to govern the country, and other factors are just a cover-up of their own lack of ability.