No matter what difficulties you encounter, don’t give up. You must persevere so that you can overcome difficulties. Just like me, if you don’t know how to do a question, read it several times and understand the meaning of the question. You will do it naturally. It turns out that the true meaning of "read the book a hundred times, and its meaning will become apparent" is this. As long as you read it a few times, I can understand the meaning of any difficult question and can easily understand it. Easy to make.