Emperor Xuanwu of the Daqian Dynasty wanted to establish a crown prince, but the position of prince became a "hot potato" that all the princes avoided. The eldest prince escaped into Buddhism and became a monk, the second prince retired to the mountains to practice Taoism, the third prince declined on the grounds of escaping from the world, and the fourth prince also tried every means to evade, and each of the four princes used clever tricks to avoid the treasure. There was a lot of excitement in the court, and the emperor and queen, who were anxious to pass on the throne, even had the absurd idea of "having another son." This anti-conventional turmoil of establishing a crown prince conceals the warmth of brotherly harmony and no desire for power, and staged a costume light comedy with lots of laughs.