What is the significance and function of waterwheel as an agricultural irrigation tool?

The waterwheel is the oldest agricultural irrigation tool in China, a superb labor skill created by our ancestors in the process of conquering the world, and a precious historical and cultural heritage.

After the completion of the Han Dynasty, the water tanker was improved by Kong Ming during the Three Kingdoms period, and then it was popularized and used in Shu, so it was called "car". This irrigation tool irrigated a large area of farmland in Shu, which played a vital role in the economic development at that time.

With the development of agricultural mechanization and modernization, "Kongming Car" almost disappeared. However, in the long history of human civilization, "Kongming Automobile" has been created, dedicated and brilliant after all.