The next morning, yueyue'er tells his grandmother that his brother has found out that his son has been poisoned with parasites and is outside the palace. He wants to ask the king of the west to help him find the culprit so that he can protect his son. The king has been a loyal member of the ji family for generations, and he must reassure them that he will do his best to protect their son. . The poison that the prince has is contagious, so he must first take the prince to the palace, where the prince will be safe. The prince is concerned that the poison will endanger the palace and has been developing an antidote, but he has not yet found the person who put the poison. The most important thing to do now is to identify the murderer, get the poison antidote, and save the life of the prince. The grandmother is shocked that the king has surrounded the palace with his men, and that the regent has refused to let anyone out. The regent has been repeatedly interfering in the palace's affairs, and the grandmother is outraged at the regent's defiance of the king's order.