The strong wind knows the strong grass, and the scorching fire refines true gold. Greed, fear, hesitation, decisiveness, bravery, prudence, conformity, and other aspects of human personality are exposed in market transactions. To some extent, profit is a reward for your character strengths during the trading process, while loss is a punishment for your character weaknesses during the trading process. Technically easy to learn, psychologically sad. Human nature manifests one by one in the ups and downs of the market. By controlling one's psychology, recognizing human nature, staying away from the herd, and standing opposite the majority of people, you have already won half of the market.