The Yangtze River Delta, Yangtze Delta or YRD, also called Yangzi Jiang Delta, Changjiang Delta, River Chang Delta, Lake Tai Region or the Golden Triangle of the Yangtze, generally comprises the triangle-shaped territory of Wu-speaking Shanghai, southern Jiangsu province and northern Zhejiang province of China. The area lies at the heart of the region traditionally called Jiangnan (literally, "south of the Yangtze River"). The Yangtze River drains into the East China Sea. The urban build-up in the area has given rise to what may be the largest concentration of adjacent metropolitan areas in the world. It covers an area of 99,600 square kilometres (38,500 sq mi) and is home to over 115 million people as of 2013, of which an estimated 83 million is urban. If based on the greater Yangtze Rive