What is a strange "weather spring"?

Wind, rain and lightning, most natural phenomena can be understood and discovered by scientific thinking. However, nature is mysterious, and even modern science has failed to find the answers to some phenomena.

There are many strange phenomena in nature, even some springs are no exception. There are some springs in China that can accurately predict the weather. On the edge of the Yuan River in Chenxi County, Hunan Province, there is a strange cave called Boluo Cave, which is hidden under the water. On the eve of a long sunny day to rain or a long rainy day to clear up, big bubbles are dug in the water next to the cave, making a "poop-poop" sound. There is a similar cave in the upper reaches of Yuanshui River, which is 1 km away. It's not as noisy as Boluo Cave. People call these two caves meteorological caves.

There is a fan-shaped pool in the cave on Shijiaozhai Mountain in fuchuan county, China. The pool is10m long and 8m wide. The shallow part of the pool is knee-deep and the deepest part is more than 3 meters. On a sunny day, the pool water is clear, and when it is about to rain, the water surface will be covered with a layer of golden yellow. When you touch the water with your hand, the color will disappear, and the cracks in the water waves will still be crystal clear.

There is a strange spring in Sujia Village, Haiyang Town, lingchuan county, Guangxi: when the weather is clear, the spring is clear and transparent; When a milky "rice soup" gushes from the spring, it will rain within 3 days. And people can know how heavy the rain is according to the amount of mud gushed from the spring. When the spring water began to clear, the weather also cleared up.