Since agricultural production is often attacked by various bad weather, production is very passive. In order to take the initiative in production, people must observe and understand weather changes. In the process of observation and understanding, some weather proverbs have gradually been formed and circulated and applied among the people. Chongming Island has a history of more than 1,300 years. In order to adapt to and change production and living conditions in the practice of farming in the fields, fishing at sea, and maritime shipping, the islanders must understand and master climate changes. The islanders compare the astronomical phenomena and physical images found in daily life with the actual weather changes, and gradually understand the relationship between them. After repeated discovery, gradual accumulation, and continuous evolution, they gradually become many weather proverbs that are easy to read, easy to remember, and well-known to all ages. These weather proverbs have played a great role in people's production and life practices. In order to express their conviction in the Chongming people's superb ability to read the sky, people give them the reputation of "Chongming people guessing the sky". Chongming weather proverbs have been widely circulated among islanders from generation to generation and can be roughly divided into the following categories: 1. Weather proverbs for the four seasons of spring, summer, autumn and winter, for example: "The snow stops at Qingming and the frost stops at Guyu". 2. Proverbs that predict the weather based on clouds, for example: "When there are hooks of clouds in the sky, it will rain on the ground". 3. Proverbs that predict the weather based on wind, for example: "Northeast wind, rain Taigong". 4. Proverbs that predict the weather based on rain and snow, for example: "After the rain, there are stars, and heavy rain will follow", "After the snow, it will be cold, and the weather will be sunny for a long time". 5. Proverbs that predict the weather based on thunder and lightning, for example: "Spring thunder without ice, there will be no peace for ten days and ten nights", "Lightning in the south means the fire door will open, and lightning in the north means rain will come". 6. Proverbs that predict the weather based on frost, fog and dew, for example: "After Qingming, there will be frost for three days, and it will be good to make beds in all ditches", "Three days of fog and west wind, if there is no west wind, there will be no rain". 7. Proverbs that predict the weather based on halos, rainbows, and clouds, for example: "Sun halos mean rain at midnight, moon halos mean wind at noon", "East rainbows mean sunshine, West rainbows mean rain", "Don't go out if there is morning clouds, but you can travel thousands of miles if there is evening clouds". 8. Proverbs that predict the weather based on the sun, moon, and stars, for example: "When the sun rises and sets, it will be rouge red, either it will rain or it will be windy", "On a summer night, the stars are dense, and tomorrow will be sunny and hot", "When the moon is hairy, it will rain heavily". 9. Proverbs that predict the weather based on the reflections of animals, for example: "When ants move, it will rain heavily", "When earthworms crawl on the road, raindrops will be like tangled hemp". 10. Proverbs that predict the weather based on plants, inanimate objects, and other phenomena, for example: "When willows sprout early, the temperature will be high in early spring", "When there is moss in the river, there will be heavy rain". 11. Proverbs that predict the weather of thunderstorms, hail, tornadoes, and typhoons, for example: "When the sun is red with blood, there will be thunder on that day", "When thunder sounds like grinding a millstone, hail will fall steadily", "When black clouds with flat bottoms, tornadoes are coming", "When arrow clouds appear in the sky, there will be typhoons". Chongming's weather proverbs are precious intangible cultural heritage. Although meteorological science has entered the high-tech and modern 21st century, these weather proverbs still have their unique role and special application value in understanding and mastering the laws of weather changes and predicting the weather.