Twenty-four solar terms originated in the Yangtze River basin.

Twenty-four solar terms originated in the Yangtze River basin and twenty-four solar terms originated in the Yellow River basin, which is wrong.

Twenty-four solar terms originated in the Yellow River Basin and are the crystallization of the long-term experience and wisdom of the ancient Han working people. As early as the Spring and Autumn Period, four solar terms, namely, mid-spring, mid-summer, mid-autumn and mid-winter, were set, and they were constantly improved and perfected. By the Qin and Han Dynasties, the 24 solar terms had been completely established.

Twenty-four solar terms are special festivals in the calendar to express natural rhythm changes and establish "December construction". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs.

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Twenty-four solar terms are the product of ancient farming civilization, which occupies an extremely important position in China traditional farming culture. The twenty-four solar terms are of practical value to people's life and culture since ancient times. Twenty-four solar terms are the concrete division, replacement and periodic reappearance of time, among which the solar terms that mark the change of solar terms are the symbolic time of time movement and cycle, and are the important nodes of yin-yang transformation.

In the early era of observing images and timing, the farming cycle was a celebration cycle, and some solar terms were festivals. Although solar terms and festivals have been separated since then due to the promotion of the method of combining yin and yang in historical development, many solar terms have been retained as festivals. Almost every solar term also has its own colorful solar term custom activities.

The above content is referenced from Baidu Encyclopedia-Twenty-four solar terms.