Why does Mrs. CoCo Lee in A Dream of Red Mansions have a high status?

Of course, in ancient China, the eldest daughter-in-law was always the housekeeper, and the eldest daughter-in-law was in charge of everything in the family, and her status was of course very high. But in A Dream of Red Mansions, Mrs. Wang is not the eldest daughter-in-law, Mrs. Xing is, and Jia She is Jia Zheng's brother, so Jia She also inherited the title. But obviously, Jia Jia, the supreme leader of Jia's family, disliked Jia She's dissolute life, but liked Jia Zheng who followed the rules, so he made an exception and gave the housekeeper power to his second daughter-in-law, Mrs. Wang. Look at where Jia She and Jia Zheng live. As the eldest son, Jia She actually lives in a dark yard next to Fu Rong, while Jia Zheng lives in the middle of a mansion where only the head of the family can live. This explains the problem. Later, during the Spring Festival, Jia She told an eccentric joke, which made grandma very unhappy. That doesn't explain the problem.

Look at Wen Li, Mrs. Wang's eldest daughter-in-law, who naturally belongs to her housekeeper. However, Wen Li seems to have no interest in the housekeeper's encyclopedia. She just wants to raise her son wholeheartedly. Mrs. Wang had to give the housekeeper encyclopedia to Wang Xifeng. Obviously, Mrs. Wang doesn't want to do this, because Xifeng is Mrs. Xing's daughter-in-law, and Mrs. Wang has no choice but to do so. But Wen Li has a high position in Fu Rong. After all, she is a daughter-in-law.