My mother-in-law was old and sick and was bedridden for three years before she left. After her mother-in-law became ill, she became much gentler. She no longer scolded her at every turn, and even begged her: "Serve me well. I will protect you when I go to the underworld and let you enjoy great blessings for the rest of your life." At this time, a neighbor gave her an idea and asked her to buy rat poison to poison her. Poison these evil mothers-in-law to death.
But Sister Liu never did this. It is unknown whether the other Sister Zhang and Sister Wang did so. When the sisters' mother-in-law was in bed, the sisters stood in the flood of current affairs and took the opportunity to reverse the status of their wives.