Why do I quarrel with my third sister, and my elder sister and my second sister are on her side? I am the only boy in my family and the youngest, so Third Sister loves to tease me. I ate it yesterday.

First of all, there must be something wrong with Third Sister bullying you, but Third Sister bullying you is a joking attitude, not really bullying you. Second, you are a little impulsive and can't yell at her. Your coping style is too extreme. If you cry to your elder sister, they will turn to you for help. They say that you mainly react to a series of emotions such as violence and anger because of shouting.