Introduction to Tongxi Reservoir: Construction started in 1956 and was completed in 1958. The average water depth is 8 meters, and the deepest reaches more than 20 meters. The dam is 200 meters long and 13.5 meters high. Tongxi Lake accommodates many streams, large and small, with a rainwater collection area of ​​16.9 square kilometers. Whenever it rains, the streams spray beads and jade, like white dragons flying into the sky, making the artificial lake with a capacity of 2.2 million cubic meters clear and green. If there is continuous rainy weather, the lake will become misty and misty, as if it is covered with a mysterious veil. The water in Tongxi Reservoir is clear and pure. The strength of the mountains and the softness of the lake are cleverly combined into one, which is beautiful.