What role does the lunar calendar play in agricultural production?

The lunar calendar takes ten days as a cycle, and records time through the arrangement and combination of twelve earthly branches. According to legend, it was calculated by a man named Wannian, so it is also called the perpetual calendar. Lunar calendar is a traditional calendar of Han nationality adopted by China for a long time. It arranges 24 solar terms to guide the agricultural production activities of ancient working people. This is summed up by the long-term labor of the working people in ancient China.