He is the son of the Xiao family, one of the three great families in the feudal country. He is the youngest left prime minister since the founding of the country. He served as the prince's young master. He assisted the young emperor. He is also the teacher of the young and promising No. 1 Scholar. As a son of the Xiao family who is loyal to the royal family, facing the rebellion of his friends, should he choose to serve His Majesty wholeheartedly or his former right-hand man? As a teacher, when faced with a student's betrayal, should you choose to suppress him, or simply help him? In fact, he has a secret. Him or her?