Collect some agricultural proverbs and talk about the phenological knowledge contained in them.

If it is cold and rainy in spring, it is cold and rainy in winter: if the temperature is low in spring, it will be rainy, but if the temperature is low and rainy in winter, it smells like rice, which is not so shocking; If it thunders on a thunderous day, it means that the solar terms are correct, the weather is good, the rice is harvested and the rice price is cheap. On February 2nd, it thundered, and the rice was pounded heavily: it means that the solar terms are correct, the weather is good, the rice is abundant, and the rice price is cheap. On the same day, if the spring thunder rings first, this year's harvest will be very good. Vernal equinox vernal equinox, the sky is sealed: the vernal equinox is twelve hours day and twelve hours night. It is good to plant fields before the vernal equinox and beans after the vernal equinox: this is an agricultural phenomenon in the north of Taiwan Province Province, but it is earlier in the south. Paeonia lactiflora is planted in spring, but it will not open when it is old: Paeonia lactiflora opens in summer, and the vernal equinox is too slow. There are fewer patients when it rains at the vernal equinox: if it rains at the vernal equinox, there are fewer patients. In early March in Tomb-Sweeping Day, young people froze to death: young people love beauty, so they wear light clothes in spring and are often frozen by sudden cold. Cold weather, not cold in spring; Spring rain, it doesn't rain in spring: if the weather is cold in spring, the climate will not be cold all spring; If it rains in early spring, there will be less rain in spring. Children's noodles in spring: Spring is between cold winter and midsummer. At this time, the climate in the south is warm and the north is still cold. There is a great temperature difference between north and south, so the weather is changeable in spring. At this time, the cold air in the north and the warm current in the south often meet and conflict, and when there is a cyclone, the weather turns rainy. After the cyclone, it turned fine again, just like a child smiling through tears, so it is called "a child's face in spring".