Urgent! ! What are the similarities between Cao in Zhang Ailing's The Golden Lock and Love in a Fallen City?

Both of them were victims of the feudal system at that time. Both of them were young and energetic at first, but in the end, forced by feudal families and backward systems, both of them violated their original principles. At first, Bai Liusu believed that he could control his own destiny, but in the end, he had to achieve his goal through a dangerous love affair with Fan Liuyuan, and finally entered the marriage hall again. His fate was tragic. He was not only forced to be sold to the Chiang family, but also unable to get his own love. In the end, under the suppression of lust and the pursuit of interests, he betrayed his own principles and put on a heavy yoke, which not only hurt himself, but also hurt others.