About Dongxing: Dongxing is situated on the southwestern corner of the Chinese coast on the border with Vietnam. It is an important port for trade between China and Southeast Asia. The Beilun River forms the border between China and the Vietnamese town of Móng Cái. Dongxing is known for its fine sandy beaches, crystal-clear seawater and stunning sunset views. Popular destinations include Dongxing Jingdao Scenic Area, which boasts picturesque coastal scenery and traditional local culture.