In ancient China with water resources, people have long known how to use water power to replace human work, as shown in Figure 2-35. In 3 1 year, the smelting industry began to use hydraulic blowers. Fig. 2-36 is a hydraulically driven Chu Jiu; Figure 2-37 is a water mill driven by water; Figure 2-38 shows a waterwheel driven by water.

Figure 2-35 Schematic Diagram of Hydraulic Driving Blasting

Figure 2-36 Hydraulic Drive Chu Jiu

Figure 2-37 Water mill driven by water

Figure 2-38 Hydraulic Drive Water Mill

Figure 2-39 Ancient Windmills