What did festivals mean in ancient times?

In ancient times, solar terms refer to the climate and phenology of a solar term, and solar terms refer to the season and climate and phenology of a solar term. In some parts of our country, some festivals are regarded as festivals, and the four seasons refer to ceremonies and festivals carried out in seasonal order.

In the process of using the 24 solar terms to engage in agricultural activities, the ancients established some dates similar to the solar terms, long or short, and with certain climatic characteristics, which were called festivals. Twenty-four solar terms are special festivals in the dry calendar, indicating the change of natural rhythm and establishing "December construction".