The  Huángpǔ (help·info), formerly romanized as Whangpoo, is a 113-kilometer (70 mi) long river flowing through Shanghai that was first excavated and created by Lord Chunshen, one of the Four Lords of the Warring States during the Warring States period. It is the last significant tributary of the Yangtze before it empties into the East China Sea. The Bund and Lujiazui are located along the river.