What are public opinion warfare, psychological warfare and legal warfare?

1. Public opinion war refers to that both sides of the war use mass media such as television, radio, internet, newspapers and periodicals to deliver selected information to the audience in a planned and purposeful way, publicize their positions, views and opinions on specific events, block, disintegrate and counter the enemy's public opinion offensive, thus affecting the mood and behavior of the audience, guiding public opinion, influencing the dominant position of public opinion and creating a favorable public opinion situation. Second, psychological warfare refers to the antagonistic activities that both sides of the war use various means to change the enemy's cognition, emotion, will and behavior based on psychological principles, destroy the enemy's resistance will, weaken the enemy's combat capability, consolidate their own psychological defense lines, and strive to achieve great victory at a small cost. 3. Legal warfare refers to the legal confrontation activities in which the two sides of the war expose the illegal acts of the enemy in various forms according to domestic laws and international laws, especially the laws of war or armed conflict, gain legal advantages and win international political and moral support, which is beneficial to themselves and unfavorable to the enemy.