After Hiking into the Mountains, the Whole World Began to Mutate

I thought this was a normal hiking route, but since I entered the mountain, everything seemed weird. A tall wild fox wearing a bright red head; a huge prehistoric creature suddenly appeared in the huge bamboo forest; the sound of rain suddenly appeared in the cloudless mountain forest; a strange figure waving to people appeared in the heavy fog, the forest path looked like a ghost hitting the wall, and the supernatural phenomenon of people suddenly calling at night. What happened to this world? Besides, what does it mean to pick up an ancient wife in the mountains?