First, the event review October 26, an intentional injury case occurred in the city, the victim Li was a man with a sharp object stabbed in the neck, and then sent to the hospital to rescue and died. At one time, “robbery gold necklace”, “revenge murder”, “pervert murder” and other rumors. And because it happened in the downtown area, it attracted widespread attention from the community. After the police investigation learned that the suspect Zhou had rented a rental room in Li, because of trivial disputes occurred many times, the hatred of Li, waiting for the opportunity to kill revenge. Second, the psychological interpretation of the tenant and landlord due to disputes over trivial matters and harboring a grudge, which eventually led to a downtown murder tragedy. The destructive attack was based on unresolved grudges. Unresolved grievances often produce aggressive behavior, either by directly attacking the object of his resentment, that is, “an eye for an eye” way to retaliate or hurt others, or may even destroy others or die together; attacks may also be transferred to unrelated people or objects, for example, adults breaking into kindergartens or elementary schools to violence against children and other similar tragedies, innocent children are the perpetrators of the attacks transferred to the children. The innocent children are the scapegoats of the abuser’s aggression transference; sometimes the aggression also turns on itself, for example, self-punishment, self-abuse, or even suicidal behavior. There are three main reasons for the transference of aggression: 1) the person has pent-up anger and resentment, but does not know the cause or the target; 2) the person is incapable or unable to carry out a direct attack on the target of resentment; 3) the person may be afraid that a direct attack will bring about negative consequences or may cause him or her greater anxiety. Whether it is direct retaliation or attack diversion, it only temporarily relieves the person’s internal resentment and pain. If the anger and resentment cannot be resolved, the accumulated resentment may break through the control of reason and explode into aggression. Awareness and understanding of resentment is the beginning of resolving accumulated resentment, but people seldom realize the real cause of their resentment, such as frustration when they do not get the desired response from others, or when what they like or want to do is hindered by others. If the person attributes this frustration to the intentional cause of others, he or she is prone to anger and even aggression, or to repress and hold a grudge. As can be seen, the attribution of others’ behavior to intentional acts is the key to generating resentment. Second, seemingly current anger and hatred may stem from disappointment in the past, trauma, or other reasons. If people’s needs are not met in their early years, they often become irritable and complaining as adults, for example: Growing up in an environment that lacks care, trust and respect, a strong desire for care, trust and respect will be buried inside, and this strong desire will put people in an extremely sensitive state, and if there is a slight conflict or strife in interpersonal relationships, they will feel denied and discriminated against, and feel their self-esteem Being greatly insulted, it is easy to produce violent anger or strong hatred; resentment is also often used to cover up other emotions that do not want to face, especially in a family atmosphere that does not promote the expression of emotions growing up, may not be able to appreciate their own emotions other than anger and hate, often using anger and hate to cover up their inner powerlessness, weakness, shame, guilt and fear. Learning to regularly self-reflect on one’s emotional reactions and irrational beliefs is the key to self-understanding and growth, and learning some ways to do so will help to resolve accumulated resentment. Appropriate exercise will help release the energy pent up by anger and hate; correct irrational thinking patterns that induce resentment, such as generalization, over-promotion and other cognitive biases that bring about anger and hate; learn to express inner resentment and emotional experiences appropriately, such as writing a diary or expressing inner pent-up resentment and anger with trusted friends and relatives, expression helps to vent the accumulated resentment; learn to let go and be ready to forgive each other. Learn to let go and be ready to forgive. Attacking and punishing after the fact will not help the damage that has occurred, and clinging to it will only make the day more unpleasant; live in the moment, devote your attention to the beauty, food, music, work around you, focus on the moment and feel life. Of course, if necessary, you can seek help from psychologists. Seeking help is not a sign of weakness. If no matter how hard you try, you still keep feeling frustrated and angry. If you are unable to resolve your resentment and have strong impulses to retaliate and attack, you should consider seeking more help. With the assistance of a psychologist, it can help to discover the deeper causes of resentment and to control and resolve the pent-up resentment within.