Li Chenggan is the son of Li Shimin, Emperor Taizong, who became the Crown Prince after he acceded to the throne. There are musicians in their teens who are beautiful and can sing and dance, and Li Chenggan is especially favored. Emperor Taizong was furious when he knew it, but he was satisfied and killed it. Cheng Gan lamented it, for another reason, the original secret plan was reversed. If you see a leak, you will waste it, and you will die in an apprentice.

It is the happy man who is satisfied.