2. In China culture, white is the opposite of red, which is a basic taboo word, reflecting China people's rejection and aversion to material and spirit. In China's ancient Five-Party Theory, the west is a white tiger, and the west is the autumn when Xingtian killed the gods. In ancient times, people often conquered injustice and executed prisoners in autumn. So white is a sign of exhaustion, bloodless and lifeless, symbolizing death and bad omen.