The Qingming Festival, also known as the outing festival, the Xingqing Festival, the March Festival, the ancestor worship festival, etc., is at the turn of mid-spring and late spring. The Qingming Festival originated from the ancestors' beliefs and spring festival rituals in ancient times. It is the most grand ancestor worship festival of the Chinese nation. The Tomb Sweeping Festival has both natural and cultural connotations. It is both a natural solar term and a traditional festival. Tomb sweeping and ancestor worship and outing are the two main themes of the Tomb Sweeping Festival. These two traditional themes of etiquette and custom have been inherited in China since ancient times and have not stopped.

The Tomb Sweeping Day is an ancient festival of the Chinese nation. It is not only a solemn festival to sweep tombs and worship ancestors, but also a festival for people to get close to nature, go for outings and enjoy spring. Douzhi B (or the solar yellow longitude reaches 15 °) is the Qingming solar term, and the festival time is before and after April 5 of the Gregorian calendar each year. This season is full of vitality, all things "breathe out the old and bring in the new", and the earth presents the image of spring and scenery. It is a good time to take a youth tour in the suburbs and carry out the Qing Tomb Festival. The Qingming Ancestor Worship Festival has a long period. There are two kinds of statements: 10 days before and 8 days after the Qingming Festival, and 10 days before and after the Qingming Festival. These are all within the Qingming Ancestor Worship Festival.

The Tomb Sweeping Day is a major traditional spring festival. Tomb sweeping and ancestor remembrance are the fine traditions of the Chinese nation since ancient times. It is not only conducive to carrying forward filial piety and kinship, awakening the common memory of the family, but also can promote the cohesion and identity of family members and even the nation. The Qingming Festival integrates the natural solar terms and human customs, which is the unity of the time, the place and the people. It fully reflects the idea of the ancestors of the Chinese nation to pursue the harmony of "heaven, earth and people", and to pay attention to the adaptation of the time, the place and the natural laws.