What does the evil in Wang Xifeng and Baoyu in A Dream of Red Mansions represent?

They were possessed because Aunt Zhao gave Ma Daopo money to Ma Daopo to put them to death, so that Jia Huan could inherit the family property and Aunt Zhao herself would be successful. The monk's way to save them is to show the benefits of Baoyu's piece and "stop worshipping." Besides, Shen Ying (namely Jia Baoyu), the waiter, has not returned her tears. Ma Daopo's magic is the concentrated expression and outbreak of family conflicts in feudal society.