There's an old saying in China, it's called "the genius is jealous". A person is so clever that even heaven will envy him. So in this case, they naturally didn't live long and died young.

For example, Guo Jia in the Three Kingdoms period was such a fate. With him around, Cao Cao can be said to have defeated the invincible hand in the north. However, since the death of Guo Jia, Cao Cao has made several wrong decisions in succession. Battle of Red Cliffs's failure not only lost a lot of troops, but also made Cao Cao lose the best opportunity to compete for the world.

Secondly, people who go against the sky like this will arouse the envy of people around them, because once they live long enough, they may have an impact on the status quo, which is unacceptable to others.

For example, Cao Chong, the son of Cao Cao, is an out-and-out child prodigy. Cao Cao also likes him very much and wants to give up his position to Cao Chong. But in the eyes of other sons, this kind of favor becomes eccentric. They will think that as long as Cao Chong is alive, they will never inherit everything from Cao Wei. So in this case, the only way to solve this problem is to kill Cao Chong, and the death of Cao Chong is related to xelloss in history.

In addition, there is a saying that prodigies' brains are different from ordinary people, so they will overuse their brains, causing some burdens on their bodies, which will lead to various diseases, and the medical level in ancient times is not very developed, so these prodigies generally don't live long.