How did ancient people know the weather?

At that time, there was no meteorological science, and people only observed and predicted the weather by looking up at the sky and divining. Of course, the accuracy of the prediction is unknown.

In China's earliest poetry collection, The Book of Songs, the ancient people's experience of looking up at the sky was recorded. The north wind in the Book of Songs: "The north wind is cool, and the rain and snow are wet. ..... The north wind roared, and it was raining and snowing. ..... "Pei, the rain and snow are grand; Oh, wind disease. It's raining, raining and snowing. It means that the cold north wind is blowing, with strong wind and heavy rain and snow.

Experience is the main basis for the ancients to make weather forecasts. As early as the Han dynasty, there have been examples of forecasting sunny and rainy days by using the principle of string sensing humidity. In the book Tian Wu Jia Xing, Lou Yuanli in the late Yuan Dynasty and early Ming Dynasty also said: If the clean strings with good quality suddenly become loose and wide, it is because the piano bed is wet; This phenomenon indicates that it will rain. He also said that if the tone of the harp strings is not well tuned, it also indicates rainy weather, which is also scientifically based.

After thousands of years, weather forecasting has not become a systematic empirical science, but people's understanding of weather phenomena is deepening. In the meantime, Shen Kuo, a scientist in the Song Dynasty, recorded a county tornado in A.D. 1076, which was the earliest tornado record in East Asia. He explained the reasons for the formation of rainbows and recorded "ball lightning". Meng Qian Bi Tan also recorded a successful rainfall forecast case in Shen Kuo.

Zheng He's voyage to the West in the Ming Dynasty reflected the deepening of the ancients' understanding of the weather and began to take the initiative to use wind energy during the voyage.

Dating back to more than 300 years ago, there appeared a continuous meteorological record and a meteorological department-"Qin" in China. Qin Tianjian was founded in the 16th year of Qing Emperor Kangxi, namely 1677, which is similar to the current meteorological department of the government. They made a unified rain gauge, so that Zhili area (equivalent to today's province) can record sunny and rainy days and observe weather phenomena such as rain, snow, wind and thunder. This is the first ground meteorological observation network in the history of China. With this observation network, Kyoto (that is, Beijing) has accumulated continuous observation records of 180 years from the second year of Yongzheng (1724) to the twenty-ninth year of Guangxu (1903). This has become the longest-lasting rainfall observation data in China's existing archives, which can be said to be a symbol of the quantification of meteorological trends in China.

I hope my answer can be adopted by you. Thank you.