Empress Wu Zetian? No, That's My Sister

Zhang Bei traveled inexplicably for three days and accidentally brought back a little girl. It would be fine if she was just an ordinary ancient person, but it happened to be the famous heroine of the wordless monument in history: Wu Zetian! But fortunately, Wu Zetian is still a twelve-year-old child, and it seems that it is okay to raise her as a younger sister. But... What to do with the princess who was given away for marriage? She can't be raised as a bride, right? And that beggar who can eat five pounds per meal? Do you think his name is Zhu Chongba and he is planning to change his name to Zhu Yuanzhang? Rebellion is not an option, and determination is not an option!