Which solar terms mean Qingming?

Among the 24 solar terms, Qingming is the only solar term that is both a solar term and a festival (the winter solstice is also a festival in history, but now it is no longer celebrated in most places). The name of Tomb-Sweeping Day is related to the weather and climate characteristics at this time. The Western Han Dynasty's "Huainanzi Astronomical Training" said: "On the fifteenth day after the vernal equinox, the bucket refers to B, and the Qingming wind is coming." "Qingming Wind" is a refreshing and clear wind. "When I was in 100 questions" said, "Everything grows at this time, clean and bright. So it is called Qingming. " Although Qingming, as a festival, was only formed in the Tang Dynasty, Tomb-Sweeping Day Qi, as a symbol of time sequence, has long been known by the ancients and clearly recorded in the Han Dynasty.

Twenty-four solar terms are the climatic laws summed up by astronomers and people in ancient China in their life and production practice, which appropriately reflect the changes of temperature, phenology and rainfall throughout the year, and have indispensable guiding significance for people to arrange farming and sericulture activities on time. By Qingming, the temperature is getting warmer and the rainfall is increasing, which is a good season for spring ploughing and spring planting. Therefore, Qingming is an important solar term in ancient agricultural production. Agricultural proverb says

It is this truth that "before and after Qingming, point melons and plant beans" and "planting trees is nothing more than Qingming". In the Eastern Han Dynasty, Cui Ai's Moon Order for Four recorded that "Tomb-Sweeping Day ordered a silkworm concubine to stay in the silkworm room ..." It is said that it was at this time that he began to prepare for sericulture. "Tomb-Sweeping Day" is just a solar term, not a festival.

In addition, Qingming is in early spring and March, with beautiful spring, everything recovering, pleasant climate and full of vitality everywhere. This is a good time for spring outing and suburban entertainment, so before and after Qingming Festival, it naturally becomes a good time for people to enjoy playing outdoors and in the countryside.

Although the Tomb-Sweeping Day mentioned in this paper mainly refers to festivals rather than solar terms, the atmosphere of Tomb-Sweeping Day provides important conditions for the formation of Tomb-Sweeping Day customs in terms of time, weather and climate characteristics, and this solar term should be regarded as one of the origins of Tomb-Sweeping Day.