A research paper published in a famous foreign academic journal reveals that when people are angry, there will be a series of reactions in the body, which will make the heart beat faster and endocrine disorder, and cause high blood pressure and digestive system disorder  In severe cases, it may cause vomiting or even fainting, and it can also cause skin freckles to increase in the future  Zhang San hopes that his child can go to a famous university
If he sees the grades his child are not satisfactory, he will sulk
In the final exam of the semester,the grades of two of the son of the Zhang San subjects dropped.