Speak first in the debate, make an opening statement and state your main points. The emphasis is on comprehensiveness. The second defense requires quick response and strong adaptability, which is mainly used for one-on-one attack and defense with opponents. Can quickly find out each other's loopholes. Generally speaking, it is recognized that debate is responsible for stating one's own views. Excluding the factors of personal style, the basic duty of the debate is to explain clearly the understanding of the arguments of both sides, the premise, standards and reasons of their own views, highlight the key points and express them clearly and smoothly.