I calm down and think about one thing. Why do I always get a fright when someone slaps my desk or something?

Because you are a very dedicated person, the advantages outweigh the disadvantages. When you want to do something, you may put in more energy than ordinary people, and success often gets twice the result with half the effort. But you will also have a different side. For example, you don't pay attention to details. Chen Yi still eats ink as candy when he is working and studying.