Introduction to Tongtian Lake: Tongtian Lake was originally the main water supply reservoir of Tiangang Mountain Power Station. It has a water surface of more than 110 acres. It is located high up and the lakes and mountains complement each other. The newly built plank road around the lake and Rainbow Bridge in the second phase of development are located close to mountains and rivers, making them quiet and charming. The Tongyou Peninsula in the lake, with tall trees and dense forests, chirping birds and fragrant flowers, is magical and spectacular, not a waterway but a modern one.