Can the water in the Yellow River really predict the weather?

During the Qianlong period of the Qing Dynasty, Emperor Qianlong, as the king of a country, attached great importance to one thing as soon as he ascended the throne, and that was the grain harvest of the whole Qing Dynasty. As a big agricultural country, the harvest of grain is of great significance to a country, so Emperor Qianlong looked at the Yellow River water brought back by the Yellow River sailors with great interest and prepared to make every effort to be a wise king.

In the Qing Dynasty, it was said that the water in the Yellow River could judge the annual rainfall and whether the annual grain harvest would be good. Is there any scientific basis for this?

In fact, it is estimated that only the Yellow River in the world has such a function. Because there is much sediment in the Yellow River, Yellow River sailors use the same bag to get water from the center of the river. After each bag is filled with water in different seasons, the weight of the water bag is different.

Yellow River sailors take water twelve times a year, take a bag of water every month and seal it. Then they collected 12 months of water and weighed it in front of the emperor once a month. The sediment content in the Yellow River water is closely related to the precipitation. Once the rainfall is abundant, the sediment content in the river will increase. Once the rainfall is less, the sediment content in the river will be very small, because although the bags for water are the same, the weight of water is different.

Every time the royal family weighs the Yellow River water, the change of the Yellow River water weight represents the change of rainfall in the Yellow River area, so that the emperor will probably know whether the rainfall is sufficient this year and whether the people's food is bumper or poor. Similarly, the state can give farmers an advance weather forecast. For example, if there is a lot of rain this year, let them plant more plants that like water. For example, if there is a drought this year, let them plant more water-resistant plants. In a word, it is equivalent to the ancient weather forecast, and it is a test method that China ancient people have come up with for thousands of years. It has created certain favorable factors for agricultural development.

By the way, until now, some people have used this method to predict annual rainfall, which is more accurate than weather forecast.