Yushun struggles on the road: Houhai is an integral part of Shichahai Sea, which is composed of three water surfaces: Qianhai, Houhai and Xihai. In order to distinguish it from Beihai, Zhonghai and Nanhai, it is called "the former three seas". Houhai East starts at Anmenwai Street, West to Xinjiekou Street, south to Ping'an Street, north to the Second Ring Road, covering a total area of 146.7 hectares, of which 34 hectares are in water area and 11.5 hectares are in green space. This is the ancient waters of the Yuan Dynasty 700 years ago in Beijing. Houhai is one of the basic projects in the planning and design of the Yuan metropolis in the 13th century. Since the Yuan Dynasty, the surrounding area of Shichahai has been a prosperous commercial district of the metropolis. It was the end point of water transport at that time, known as the "ancient seaport of Beijing". At that time, there were restaurants, song terraces and shops along the coast. Houhai is an idle place with water and mountains to watch, willows to brush the shore, folk houses and residents on the shore, and the former residences of the surrounding royal palaces and celebrities, which display the endless charm of Beijing and history. People come here only to hear the crisp sound of insects in autumn, to see the epitome of the old Beijing courtyard complex, and to chew the long-gone Royal legacy. Houhai is a famous summer resort in old Beijing. Snacks hidden in the alleys emit the taste of popping belly, brine boiling, sausage and tempting soybean juice sour everywhere.