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4月20日正值谷雨时节，联合国迎来了一年一度的中文日。为什么是谷雨？这是为了纪念汉字鼻祖仓颉。相传仓颉造字时，借鉴了结绳记事的绳结，观察了走兽鸟禽的爪印，参考了掌心的纹路，顺应了星辰的方位，结合了山川的走向，汉字走势钩沉，于是应运而生。上苍因仓颉造字而感动，为人间降下一场谷子雨。那一天，白日里竟然落粟如雨，“谷雨”由此而来。

Today is April 20th, the day of the Grain Rain solar term and the Chinese Language Day observed by the United Nations. How are these two events related? They both commemorate Cangjie, the mythical inventor of Chinese characters. Legend has it that Cangjie created characters by drawing inspiration from various sources: knots used to record events, footprints of animals and birds, patterns on palms, positions of stars, and orientations of mountains and rivers. This marked the beginning of the evolution of Chinese characters, and Cangjie’s creation moved the universe so much that it caused a rain of grain to fall upon the earth. On that day, grain fell like rain during the daytime, hence the name “Grain Rain”.