The "Twenty-Four Solar Terms" is a knowledge system and social practice formed by the Chinese people by observing the annual movement of the sun and understanding the changes in seasons, climate and other aspects throughout the year.

The ancient Chinese divided the annual movement trajectory of the sun into 24 equal parts, each equal part being a "solar term", collectively referred to as the "twenty-four solar terms". The "Twenty-Four Solar Terms" guide traditional agricultural production and daily life, and are an important part of the traditional Chinese calendar system and related practical activities. In the international meteorological community, this time recognition system is known as "China's fifth greatest invention." Jingzhe March 5 or 6 Spring returns to the earth, and the sky cracks with thunder. All things are ready to move, and nothing is done. Features: Around the time of the Waking of Insects, the weather in various places has begun to get warmer, spring thunder gradually appears, and hibernating animals begin to wake up and come out of the ground. The rain is getting heavier, which is a good time for spring sowing. Spring has returned to the earth, and the sky cracks with thunder. All things want to move, and nothing is done. -- "The Book of Time: Yu Shicun's Talk about the Twenty-Four Solar Terms" When the last bit of coldness in winter is filtered by the warm sunshine of spring, the world ushered in the first critical period of the year. It was as if the birds, insects, flowers and trees were all ready, just waiting for the order to be given, they all went out. And this "order" is undoubtedly the long-lost spring thunder. "Spring thunder sounds, and all things grow!" With the arrival of the Jingzhe solar term, hibernating insects and animals wake up from their slumber. During this solar term, not only Kunshan wakes up, but also the dragon that has been dormant in hibernation, also raises its head at this time. This dragon is the Canglong Seven Stars that are closely related to the long agricultural civilization. On the night of the second day of February every year, the Canglong constellation emerges from the east. From then on, the "dragon's head" will rise a little earlier every day. After a month, the entire "dragon's head" will "raise". "On February 2nd, the dragon raises its head, and our small households use cattle for farming." In the ancient society based on farming, the dragon raised its head was a festival, also known as: Spring Dragon Festival, Farming Festival, Spring Plowing Festival, etc.