Why do Hubei Shishi predict the weather when he grows up?

A stone lion grows in a wing about 10 square meter high for five groups of retired cadres in Yuantai Village, Kedian Township, Zhongxiang County, Hubei Province.

Gao Tao, who is in his 60s, said that this house was built by his first four generations. I didn't dig a small stone on the foundation because I felt very laborious at that time. Over the past 350 years, this stone has gradually grown into a large stone lion about 360 cm long, 230 cm wide and 2 10 cm high, and this stone lion is still growing.

This stone lion is also a local "volunteer weatherman". Once the stone lion "sweats", it will rain; If the sweat rolls up, there will be a big storm.

Why did this stone grow up? Also forecast the weather? People don't know why.