On September 5, 2004 (July 21, 2004 in the lunar calendar), Wudalianchi was awarded the "World Biosphere Reserve" certificate. On September 5, 2004, Wudalianchi in Heilongjiang Province, China, received the "World Biosphere Reserve" certificate officially issued by UNESCO, and a monument unveiling ceremony was held. Wudalianchi has once again become a hot topic of world attention. Lakes in Wudalianchi City, Heilongjiang Province, China, are also known as Wudalianchi. It was formed by the Baihe River Valley, a tributary of the Senamore River, a basalt flow weir that was expelled twice by 14 local volcanoes in 1719 and 1720 - 1721. The river water is accumulated into five beaded lakes. From south to north, there are Touchi, Erchi, Sanchi, Fourth Pond and Wuchi. Lake area 18. 47 square kilometers. The lake area has beautiful scenery, the nearby volcanic craters are well preserved, and traces of lava flow on the surface are still clearly visible. In October 1982, Wudalianchi was identified by the State Council as one of the first batch of key scenic spots in the country. It has since been approved as a national nature reserve and a national geological park of China. On July 17, 2003, with the approval of the Executive Board of the International Coordinating Council of the UNESCO Man and Biosphere Program, Wudalianchi Reserve became the 23rd member of the World Biosphere Reserve Network in China. On February 13, 2004, it was approved as the world's first batch of world geoparks.