Squid is a unique species on the plateau. It is said that the growth rate is very slow, only about one or two weights per year, and it is already a national protection animal and survives in wild rivers. At Gangcha, I was fortunate to meet the wonders of swarms of salmon (of course, it seems strange to the locals). On one side of the river, thousands of salmon were gathered densely, medium and small, as if snuggling to warm, and the color of the river became black.