1. On Chinese-English and English-Chinese translation. Because the English full text is required to be submitted at the end of the competition, and the topic is also an English topic, if you don't pay attention, you will not understand the topic properly or use unsatisfactory words in the paper, so you must be prepared. Or ask an English teacher to help you see if your understanding is appropriate after the topic comes out, and then help you polish the paper.
2. In mathematics, to lay a good foundation, you don't have to learn deep mathematical knowledge, but you should pay attention to some of the most commonly used mathematical knowledge and see how these mathematical knowledge is applied in practice. For example, how to apply the knowledge of probability and statistics, such as how to apply statistics to quality control (QS), how to apply hypothesis testing to economic fields, and so on.
3. Pay attention to divergent thinking and work hard. Because of its openness and wide topics, we need not only concentrated thinking, but also divergent thinking. That is to say, from a point, how to find the essential similarity between things connected with this point and other points, especially in mathematics, on this basis, by connecting with the second point, a good mathematical model should be established.
4. Pay more attention to search for excellent papers in competitions over the years, or papers posted by other players on the Internet. Even if it is not an award-winning paper, you can refer to it. Be sure to read more books. After all, stones from other mountains can attack jade.
I wish you good grades.