After traveling to the Tang Dynasty and becoming the son of Li Shimin, the crown prince of the Tang Dynasty, Li Chengqian, he was named the Prince of the East Palace and enjoyed the position of glory, wealth and respect. All of this was because of the favor of the Empress of Tang and the eldest son Li Jiancheng in her belly!
Li Jiancheng's mother-in-law, Li Shi, was originally Li Chengqian's biological mother. After Li Chengqian succeeded to the throne, he always respected his mother's family, so Empress Tang never treated Li Chengqian badly.
However, this does not mean that Empress Tang was completely good to Li Jiancheng. On the contrary, when Li Jiancheng was ten years old, she asked Li Chengqian to transfer Li Tai, his most effective counselor, away from her.
