In China culture, white is a basic taboo word relative to red, which reflects 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.
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In Tibet, white is the most common color and people love and worship it. During the long winter in Tibet, the world became a huge Xue Hai. Even in summer, the Himalayas in the south of the plateau and the Gangdise in the north are still covered with snow.
Snow always accompanies people in Tibet. As the saying goes, the snow in the first year will bring a bumper harvest in the next year. However, this kind of snow that can bring a good harvest cannot be too small or too big. If it is too small, it will dry up and there will be no good harvest. If it is too big, it will bring a snowstorm and threaten people's lives and property. As a result, people's gratitude and reverence for snow came into being.
Baidu Encyclopedia-White