Tour of the East Pole [camera]. Sanjiangkou is the confluence of the Songhua River and the Heilongjiang River. In Figure 3, we can see that the magical scene of the intersection of the two rivers, the two rivers and two rivers, the yellow Songhua River and the black Heilongjiang River merged, the east is ten miles. . It is also the starting point of the Tongsan (Tongjiang to Sanya) highway, and the road to the street is the place where the Hezhe people gather. It is also the legendary location of Heilongjiang and Black Dragon. Many local legends and stories are also very popular. The origin of Heilongjiang? The secret of the demon stone. Tour of the East Pole [camera]. Sanjiangkou is the confluence of the Songhua River and the Heilongjiang River. In Figure 3, we can see that the magical scene of the intersection of the two rivers, the two rivers and two rivers, the yellow Songhua River and the black Heilongjiang River merged, the east is ten miles. . It is also the starting point of the Tongsan (Tongjiang to Sanya) highway, and the road to the street is the place where the Hezhe people gather. It is also the legendary location of Heilongjiang and Black Dragon. Many local legends and stories are also very popular. The origin of Heilongjiang? The secret of the demon stone.