Please ask the history of the development of China's fans

China's fan has a long history of development, the Warring States period has appeared in the four sacs of metallurgical skin, the Han Dynasty, the use of "horse row, steak". To the Eastern Han Dynasty, Nanyang governor Du Shi designed and manufactured a hydraulic blower for metallurgical casting industry. The metallurgical blower was invented in the second century A.D. It is one of the ancient Chinese inventions and one of the originators of the principle of the steam engine, which was introduced to Europe in 1200. The Song Dynasty also had a wooden fan similar to an accordion. It is a kind of wind box with automatic valves. At the end of the Ming Dynasty, there was even a piston blower.