How did the ancients predict the weather?

1, combined with solar terms: 24 solar terms in a year, and then according to some experience of weather change, some weather change rules are summarized. For example, "A knot in one's heart will kill people", "Don't go out at sunrise, a thousand miles at sunset" and so on, and there are some proverbs similar to weather forecast.

2. China's earliest poem "The Book of Songs" "Wind and North Wind" recorded people's experience of watching the weather. "The north wind is cool, the rain and snow are wet ... the north wind is wet, the rain and snow are rainy ..." The "moistening" mentioned in it is like rolling rain and snow. And "ho" is a description of wind disease; It's raining and snowing. This poem means "the cold north wind is blowing, and the wind is strong, bringing heavy rain and heavy snow."

According to some historical data, in the Han Dynasty, people began to try to use some scientific methods to predict the weather. For example, in the book Tian Wu Jia Xing, Lou Yuanli in the late Yuan Dynasty and early Ming Dynasty said: "A good quality string, if clean, suddenly becomes loose and widened automatically because the piano bed is wet; This phenomenon indicates that it will rain. "

2. During the Eastern Han Dynasty, an astronomer named Zhang Heng appeared. He once invented the earliest anemometer in the world-"Xiangfeng Copper Bird". This method is as follows: erect a 50-foot-high pole on the open ground; On the pole, install a copper bird that can rotate flexibly; Then, the wind direction can be determined according to the rotating direction of the bronze bird.