The so-called "dragon heads up" means that after hibernation, all insects begin to wake up. Therefore, as the saying goes, "On February 2nd, dragons looked up, scorpions and centipedes all appeared." Therefore, this day is also called "Spring Dragon Festival".
Extended data:
The dragon looks up, commonly known as the Qinglong Festival on the second day of the second lunar month. Legend has it that it is the day when the dragon looks up. It is a traditional festival in rural areas of China and is called the "Dragon Head Festival". As the saying goes: "On February 2nd, the dragon looked up, and everyone worked as a farmer." At this time, the sun be the spirit rises, the earth thaws, and spring ploughing will begin, which is the time to transport manure for ploughing.
Legend has it that this festival originated in the period of Fu Xishi, the head of san huang. Fu Xishi "attaches great importance to agriculture and mulberry, and cultivates the fields". On February 2nd every year, "the imperial mother delivers meals, and uses her own horse to plough", and she takes care of herself. Later, Huangdi, Tang Yao, Yu Shun and Xia Yu followed the example of their predecessors. To Zhou Wuwang, we not only followed this traditional practice, but also implemented it as an important national policy.
On the second day of February, a major ceremony was held, so that all the officials of the civil and military departments could personally plough an acre of land. This is the historical legend of the Dragon Head Festival. Another said that Wu Zetian abolished Tang Lizhou as emperor, which provoked the jade emperor to be furious and ordered the Dragon King not to rain for three years. The Dragon King couldn't bear the loss of life, and secretly rained heavily.
When the Jade Emperor learned about it, he shot the Dragon King out of the Heavenly Palace and crushed him under the mountain. The people of Lebanon felt that the Dragon King was deeply indebted to the rain and prayed to heaven every day. Finally, he moved the Jade Emperor and released the Dragon King on the second day of February, so there was a saying that "on the second day of February, the dragon looked up".
In fact, in the past, the rural water conservancy conditions were poor, and farmers attached great importance to the spring rain and celebrated the "Dragon Head Festival" to show respect for dragons and pray for rain, so that God can bless the harvest. From their wishes, it is good, so the "Dragon Head Festival" has been passed down to this day!
References:
February 2nd Origin-Baidu Encyclopedia