They Have All Been Reborn and Exchanged Marriages. Is It Normal for the Mistress to Kill Everyone?

[Sisters are born twice + exchange of marriages + fight in Hou Men's house + business] Bai Qinghuan and his sister-in-law Bai Qingwan are born in twins. In her last life, she was married to a poor man, and her sister-in-law married the eldest son of the eldest son of the Rongguo Mansion. Everyone said that her sister-in-law married well, and she would become the head mistress of the Hou Mansion in the future. But who would have expected that after her legitimate sister got married, she was not liked by her husband and was disliked by her mother-in-law. After being a widow for ten years, the Rongguo Mansion was ransacked and exiled, and her legitimate sister died on the way to exile. The poor son she married had great achievements and gradually became a close minister of the emperor, and she was also given a royal title. As a result, she fell ill and died a year after returning to Beijing. When she opened her eyes again, she went back to the time when she was discussing marriage at the age of eighteen. This time, her sister-in-law rushed to marry her impoverished husband, but she married into the Rongguo Mansion in a glorious manner. Faced with the provocation from her sister-in-law, she just smiled faintly, but she was just an incompetent and ruthless beast who tried to murder the person next to her, and she just snatched him away. In this life, she will live for herself and not rely on anyone. However, Bai Qinghuan still blushed when facing her beautiful little uncle.