There are pictures of old things, a circle, something that looks like a wheel but is not a wheel. Look at the picture. Who knows what this is? Seek answers.

The waterwheel, also known as the Kongming cart, 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. According to legend, the flower basket is the prototype of Emperor Ling of Han Dynasty, which was popularized and used in Shu after being improved by Kong Ming in the Three Kingdoms period. It was widely used in agricultural irrigation in Sui and Tang Dynasties, with a history of 1700 years.