Tongbiguan Natural Protection Area (銅壁關自然保護區) (Tóng Bì Guān Zì Rán Bǎo Hù Qū)

Established in 1986 and covering an area of 341.6 square km, Tongbiguan is located in between Yingjing and Longchuan counties and Ruili city. It offers a shelter to many rare and endangered species. Biodiversity is effectively maintained, and biological types are continuously enriched in the place.