Since February 2nd is the day when dragons look up, many foods are related to dragons.
In Beijing, people eat more spring cakes on this day, which is called "eating Longlin", and they pay more attention to eating with "combination dishes". The combination dish is fried with shredded lean meat, spinach, legumes, garlic and other vegetables. When eating, divide the spring cake into two parts, drizzle with sweet noodle sauce, serve with green onions, and then roll it into a tube with the combination dishes.
Noodles and jiaozi are also very popular in the north.
The agricultural proverb "On February 2nd, the dragon looks up" is said that it didn't rain for a long time in Guanzhong area in ancient times, and the Jade Emperor ordered the East China Sea Dragon to sow rain. Xiaolong is playful and dives into the river and never comes out again. A young man went to the cliff to collect "dragon water" to muddy the river. Xiaolong emerged from the river to compete with the young man. Xiaolong was defeated and had to sow rain. In fact, the so-called "dragon heads up" means that after hibernation, all insects begin to wake up. So as the saying goes, "On February 2nd, dragons looked up and scorpions and centipedes appeared." People in rural Shandong who eat beans say: stir-fry scorpion claws to ward off evil spirits and pray.
Solemnly declare: the answer is for reference only, please don't be blindly superstitious.