Tianmu Lake is located eight kilometers south of Liyang City, Changzhou. Because it belongs to the remnants of Tianmu Mountain, it is named "Tianmu Lake". Tianmu Lake is a deep-water Lake (reservoir) with a narrow east-west and a long north-south. The water depth in the south is about 4.5m and that in the north is about 10.14m. Around Tianmu Lake, there are many existing historical and cultural sites - "Wu Meishan named after Wu Zixu of Chu people in the Spring and Autumn Period "member", Cai Yong Reading Platform, Taibai Tower, Baoen Chan Temple, the site of the famous Shalong Xingsi in the Tang Dynasty, "the first stone arch dam in the world" and so on. Tianmu Lake area is rich in products, including "Shahe Guiming" green tea, "Oolong tea", "Pearl chestnut", "Guiyuan chestnut", "Casserole Fishhead" and so on. Tianmu Lake is known as "Pearl of the South of the Yangtze River", "Green Wonderland". Tianmu Lake has 300 square kilometers of ecological protection area, which is situated in Shahe River and Daxi two large-scale national reservoirs. It is the first batch of eco-tourism demonstration areas in Jiangsu Province.