Heilongjiang Province belongs to the border province, with Heilongjiang and Usuli River as the border with Russia, the city along the river naturally becomes a border city, forming many ports. Mishan Port is famous for having the smallest border bridge in the Guinness World Records! Bailing River, this is not a famous name Dachuan, because it has become a starting point of the Sino-Russian border of Xingkai Lake and is known to the world. At that time, the two sides of China and the Soviet Union built a simple wooden bridge on the Bailing River for convenience. With the expansion of the new commercial port, this Bailingdu Bridge has been abandoned and become a historical monument!