Beihai Golden Bay Mangrove Ecological Tourism Area is a scenic spot of China's extremely rich coastal wetland style and folk culture. It belongs to the eastern area of Beihai Yintan National Tourism Resort. Because there is a large sand dune facing the sea and shaped like a crown, the local commonly known as "big crown sand". The scenic area is about 20 square kilometers, consisting of three parts: the gate scenic area, the mangrove ecological sightseeing area and the Yuanjia folk park.