China's Dongxing and Vietnam's Mang Street are separated by a boundary river, Beilun River. A bridge management line in the middle of the Beilun River Bridge between China and Vietnam is also the dividing line between the two countries' territories. After going abroad, you will go abroad and take a step back and go home. Xinhua Street next to Dongxing Guomen is full of Vietnamese customs and is a good place to buy Vietnamese goods.