On February 12, 2001 (Lunar Calendar January 20, 2001), the project was planned to invest 1.3 billion yuan in the three-strand construction. The three-strand project is an important part of the Yangtze River flood protection system. After the project was completed, it will form a "high-strand lake" with a capacity of 39.3 billion cubic meters, which can stop the flooding of 22.1 billion cubic meters, equivalent to the flooding of four Tsinghua sub-strand areas, the Tsinghua River Flood protection standard will be increased from "one-in-a-year" to "one-in-a-hundred". The three-strand hub will be the world's largest hydroelectric power plant, 182.2 million kilowatts installed, an annual power generation of 846.8 million kilow