Chang 'an, the capital of the Tang Dynasty, was often caught and sold along the street every summer. The children sold it and put it in a small bamboo cage on a tree in the court, where they could sing for a day or two.
Cicada's life is very short, and the poet laments the impermanence of life. The poet Yang Wanli has a saying: "The empty shell paper is light, and there is much noise before the wind, which makes the poet attack in vain." Lu Shilong once paid tribute to cicada in Jin Dynasty, saying that cicada's head is like a crown belt, which means "culture", that is, "purity" means drinking dew with gas, "honesty" means not eating grains, "frugality" means waiting for nests, and "loyalty" means timely. I even call it the complete five virtues.
While in Tokyo, handsome Song kept his promise. In summer, cicadas are singing, and soldiers are arranged around the barracks to kill them. Where cicadas sing, soldiers on duty will be punished. His people obeyed, but they didn't know why he hated cicadas so much. Later, the emperor heard the rumor and asked Song to keep his promise face to face. He replied, "I don't hate cicadas. Now that the country is at peace, the soldiers are addicted to pleasure. I did this to practice the agility, wit and hard work of soldiers. "