Mathematics is difficult, and the difficulty lies in perseverance and perseverance; Doing problems-thinking about solving problems-reading books-doing problems looks boring. In fact, overcoming difficulties in the process of solving problems is like conquering one fortress after another; In every victory, the joy that small victories converge into big victories is beyond words. It's fun in pain, it's endless fun. This is doomed, and my future life will be devoted to the cause of mathematics.
It is precisely because mathematics is difficult that we can enjoy the pleasure of overcoming difficulties; If it's not difficult, it's boring to do it.