The origin of the name of summer solar terms

1. The ancient summer heat in China is divided into three periods: "Rotten grass is firefly; Second, wait for the soil to moisten and cool off the heat; It will be fine when it rains. " In the summer heat, fireflies break out of their shells, so the ancients thought fireflies were made of rotten grass; The second weather is that the weather becomes sultry and the land is wet. The third kind of weather is frequent thunderstorm, which weakens the heat and humidity, and the weather begins to transition to beginning of autumn. I remember when I was a child, there were many flashes in the corn field outside the village in midsummer, just like mysterious lights, which were the light emitted by fireflies.

2. In the Eastern Jin Dynasty, there was a man named Che Yin in Xinzhou, Nanping (now Jinshi, Hunan). He was smart, studious, diligent and knowledgeable since childhood. However, due to his poor family, his father could not provide him with a good learning environment. In order to maintain food and clothing, there is no extra money to buy him lamp oil for evening study. To this end, he can only recite poems during the day. One night in summer, he was reciting an article in the yard when he suddenly saw many fireflies flying at low altitude. The flashing light is a bit dazzling in the dark. He thought, if you put many fireflies together, wouldn't it become a lamp? So, he went to find a white silk bag, immediately caught dozens of fireflies and put them in, then tied the mouth of the bag and hung it up. It's not very bright, but it can be used for reading. From then on, as long as there are fireflies, he will catch one to use as a lamp. Since then, his knowledge has increased day by day, laying a solid foundation for his future achievements.