In the quiet valley, Lin Mengyun is lying on the snow, breathing heavily. At this time, the feeling of breathing fresh air is the happiest.

After a two-minute break, she slowed down and lifted herself up with her hands and looked at a hole next to her. She just climbed out of there, but it wasn't the fastest route from inside to outside. She pointed in the wrong direction just now. She circled around, and then she came out.

But now the cave has been blocked up, buried deep in the snow next to it, and there will be no cave at all. These snow deposits are like sand grains...