Now the prince did not know how to release the prisoner. But the sprite told him a secret plan. The boy should go to his mother and ask her to search his hair for lice.

• 王子不知道如何才能释放囚犯，妖怪遂告诉他一条妙计：让小王子去找他母亲，让妈妈给他抓头发里的虱子。