The Nanjing Xuanwu lake, located at the Nanjing Northeast, three goes around a mountain, at the same time abuts ancient Nanjing city Huan, the lake perimeter the approximately 15 kilometers. The lake water from Zhongshan north the foothill, converges the blue brook old path, the class to Qinhuai River. The lake and mountain scenery complementing each other, the view is enchanting. the Xuanwu lake is called the mulberry to anchor most early. Eastern Han Dynasty last years fodder mausoleum Wei Jiang Ziwen slain cloudy in Zhongshan, buries in the lakeside. When Sun Wu Sun Quan to evade the grandfather grandson clock given name, renames Zhongshan is “the Jiang mountain”, the Xuanwu lake is “Jiang Linghu”. And further because Sun Quan is often called in this lake training naval forces “practices the lake”. Liu Song Yuan Jia the first year, Emperor Wendi in Song dynasty has carried on a large-scale improvement to the Xuanwu lake, the lake putty which digs piles up in together, became has revealed the water surface the island. And what is biggest is “Penglai”, “the abbot”, “Yingzhou” three islands, gathers said that perhaps “the three sacred criteria mountain”, this is in today Xuanwu lake the Liang continent, surrounds the continent and the cherry continent predecessor. A Liu Song Yuan fine 23 year, in the lake presents “the black dragon” then to rename the Xuanwu lake. north “Xuanwu” ancient times in the myth usually refers to the god in our country, with on behalf of East's black dragon, represented West's white tiger, south representative's rosefinch, with was called “four gods”. When Song Shenzong, to solve the famine year common people's life problem, the Xuanwu lake drainage will be the field, the Xuanwu lake vanishes nearly, latter is after scours changes Tian Weihu, what a pity the lake area compared to originally greatly is the reduction. The Xuanwu lake today's appearance forms on the whole in the Ming Dynasty. When Mingtaizu builds the Nanjing city, borrows the Xuanwu lake is the natural moat, causes this lake no longer to go nonstop to Yangtze River, only depends on a big tree root dam and the Jinchuan river is interlinked. Area big reduction, approximately for about Six Dynasties' when 1/3, entire Ming Dynasty period, the Xuanwu lake has belonged to the forbidden area, because leaves official business by the authorization outside, generally the officials do not permit to enter casually. The Republic of China first year, the Kuomintang Government once changed name to the Xuanwu lake as “five continent parks”, after the liberation, also changes the Xuanwu lake park. In the Xuanwu lake's five continents, Liang Zhou is the scenery most beautiful place. Xuanwu lake entire garden area 472 hectares, the land 104 hectares, the water surface 368 hectares, the lake water limpid like mirror, the ocean waves ripple, on the level of the lake is distributing five oases: Surrounds the continent, the cherry continent, Liang Zhou, the green jade continent, the water chestnut continent, therefore has “five continent parks” the name. In the lake has five continents, surrounds the continent located at the lake southwest, because the shape flexure resembles the link, to hold cherry continent Yu Neier to acquire fame. On the continent plants the weeping willow, the breeze strokes, winds around just like the smoke cloud, therefore has “the link continent smoke willow tree” the name. From the link continent to the east, arrives at the cherry continent after the bridge, because on the continent plants the cherry to acquire fame, has “cherry continent Huahai” the reputation. From a link continent more fragrant bridge is the Liang continent, on the continent the trees is luxuriant, the scenic spot and historic resort are numerous, from Liang Zhou the green jade bridge to the green jade continent, here carpet of green grass, the fine wood has been many, constituted “the green jade continent cloud tree” the simple and elegant characteristic. The water chestnut continent located at the Xuanwu lake's center, has “the water chestnut continent mountain mist” the fine reputation.