In the early spring of 1932, a special expedition consisting of more than 20 people entered the vast forest area of the Greater Xing'an Mountains. Each of them carries a lot of weight, and stops and walks along the way, picking out the lonely jungles that are inaccessible. "Master Jin, the sun is going to set, do you think we have to find a place to spend the night?" The accompanying guide unfolded an old map, and the map was dotted with camping locations. Master Jin was wearing a green woolen trench coat and a pair of shiny leather boots. This man was thin, and a white and tender handsome face looked weak, but there was an imperceptible demon hidden in those deep eyes. "How far is it?" He looked at the vast sea of forest in front of him with his hands on his back.