Where are the keys to the cabin in the forest?

At the west checkpoint of Beishan Hotel. According to official website information, the secret breakout game, the key to the cabin in the forest was opened at the west checkpoint of Beishan Hotel. This key can be used to open the door of a cabin in the forest. Its specific location is at the checkpoint in the west of Beishan Hotel. The containers in the room have winter clothes, suitcases and computers, and many things, including food, will be brushed randomly.