Wuhan is the capital city of Hubei Province and the largest city in the central China with an area of 8,494 square kilometers. The world's 3rd longest river-the Yangtze River and its greatest branch, the Hanshui River flows across the city and divides 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.