Wuhan, the only sub-provincial city in Central China, is now the capital of Hubei Province with an area of 8,494 square kilometers. The world's 3rd longest river-the Yangtze River and its greatest branch, the Hanshui River flow across the city and divide it into three parts, namely Wuchang, Hankou and Hanyang. It is located at 113°41'E to 115°05' E and 29°58'N to 31°22' N. It has a humid subtropical monsoon climate with abundant rainfall, sunshine and four distinctive seasons.