"Tang" means "small", but the Bohai Sea is the first large freshwater lake in Gannan, and is also an important wetland in the eastern Qinghai-Tibet Plateau, known as "Plateau Small Pearl". In the Bohai Sea, you can walk from the grassland to the lake along the stone road and boardwalk, and there are two-story observation decks at the end of the plank road, and you can see the deep blue mirrored lake and the snow peak green grass in the distance. In summer, wild flowers are spread on the endless grassland, and flocks of birds by the lake rise and fall between the water and the meadow, showing a particularly pure scenery. The blue waves in early summer are colorful, and the wooden plank road above the wetland is like a way to connect the world. It is amazing and dazzling!