I'm a Little Busy in Tang Dynasty

Li Qingcheng traveled through time and became the eldest daughter of Tang Taizong Li Shimin. In order to survive, Li Qingcheng became the princess of Qingcheng. But being a princess is not that easy, after all, she is not a real princess. Marriage is offered, no. Marriage, let alone marriage. In order to resist the people from all sides who are eyeing him, Li Qingcheng said that he was a little busy in the Tang Dynasty. . . . . . . Note, the protagonist is a man, the protagonist is a man, the protagonist is a man, important things should be said three times.