After traveling through the Tang Dynasty, he became the prince Li Chengqian. There was a father who was an emperor through the ages, and then there were old and cunning ministers of Zhenguan, and later there were famous officials who were treacherous and cunning. Li Chengqian said, I am too difficult! Do not be a prince if you are lonely Let whoever be the prince. Li Shimin: Rebellious son! Stay honest with me as the crown prince! Li Tai: Only my brother will be the crown prince and I will accept it, and no one else will! Wei Zheng: Your Highness, please consider for all people! You are suitable to be a prince! Li Chengqian:...."