In my opinion, it's because of Tigress's selfish father. Xiangzi didn't like Tigress, but he was very kind to Tigress after marriage. He also wants to make money to feed Tigress and give Tigress a better life. Tigress had a good life since childhood, and her father's car dealership business was booming. Therefore, in Tigress's father's mind, although her daughter's face value was not high, she still wanted to find a rich man, at least a suitable one, so her father kept preventing Tigress from marrying Xiangzi until Tigress became a middle-aged woman, but her father still disagreed.

After Tigress married Xiangzi, her father sold the garage and took all the money, leaving Tigress with no money, which led to a difficult life for her in the future. When she had no money to ask the midwife to have another child, she died unfortunately. If Tigress had had the money to see a doctor, she might not have died. So the biggest reason why Tigress died unfortunately in the end was because of her selfish father. Of course, Xiangzi also has his reasons. Xiangzi didn't have much money at that time and had been at the bottom of the society at that time. Although he didn't like Tigress, at Tigress's insistence, Tigress married Xiangzi.

After the marriage, Tigress was still extravagant and spent all her savings at home. Xiangzi can only go out and pull rickshaws to make money. Pulling rickshaws is manual labor, but because Xiangzi has never done any hard work before, he can still meet his food and clothing, and his life is still very poor. Tigress was very old when she gave birth. They couldn't afford a midwife, which caused Tigress to have a difficult birth. In the end, neither the child nor Tigress survived and died together.

Tigress devoted herself to love all her life. She married Xiangzi in spite of her father's objection. Although they were not very rich, Tigress married love. But I didn't expect her selfish father to leave after she got married. Xiangzi also failed to give Tigress a happy life, which also reflected the unfairness of the society at that time and the great gap between the rich and the poor.