The feud between pregnant woman Yang and his girlfriend Zhang Mu stems from Zhang Mu's forbidding Zhang to play with himself. Yang was drooling over the money in his girlfriend's mother's hand, so he planned to kill her and hide the body in partnership.

First, the grievances between pregnant women and mentally retarded girlfriends should start from many years ago. Pregnant woman Yang and mentally handicapped girlfriend Zhang had a good relationship when they were students. Zhang treats Yang as a good friend and eats and drinks together. This Yang used Zhang as an ATM and instigated Zhang to steal his fucking money and spend it.

Once Zhang took 4000 yuan and was found by his mother. The mother forced her daughter to tell the truth, and also asked her daughter not to play with her best friend and sever the relationship. In this way, the two broke off all contact, and Zhang's mother went to Yang's house to make a scene.

Second, meet again, Yang saw that Zhang had been under strict supervision by his mother. Once Zhang met Yang, the two told each other. Zhang not only cried how bad his mother was to himself, but also revealed information such as his mother's stock trading. When Yang heard these words, Zhang's mother was very rich. If Zhang's mother is sent away, all the money is not mine.

In this way, Yang cried with Zhang, saying that he had a way to save her. Yang encouraged Zhang to kill his mother so that he could spend money freely. Because Zhang is mentally retarded, he can't think too much, so he obeys Yang's plan.

Yang and Zhang cooperate tacitly. Yang bought medicines, tools and materials outside and taught Zhang how to operate them. Zhang killed his mother at Yang's instigation. In order not to be discovered by others, he also used cement to hide his mother's body in a concrete wall, which was very cruel.

After a long time, the body stinks, and the neighbors find it suspicious and call the police. The police arrested two people and exposed their plot.

Finally: Yang was pregnant. After giving birth to the child, she was released on bail and sentenced to life imprisonment. Although Zhang is mentally retarded, she has the ability to commit crimes, so she was also sentenced to life imprisonment.

Inadvertent friends will have irreparable consequences. Whether adults or children, you should keep your eyes open when making friends.