The car traveled along the river, the factory area was beautiful like a park, and the air was unusually fresh. Under the guidance of a tour guide, we officially entered the factory area. A large map on the tall wall showed the location of the hydropower station and his important role. Entering the generator room, the neat nine generator sets appeared in front of us spectacularly. The guide carefully explained to let the children listen to it. The power generation of a unit in a minute turned out to be 1500 degrees, which made the children very excited and constantly discussed.