Deep in the forest, there is a house where seven gourds live ... and then a beautiful girl comes. She is Snow White.

You can have a look at the knowledge, which contains the plot you need and the characters you mentioned, which is super in line with your requirements. If you think I'm right, choose my answer. The general content is that after Gong Yu moved the mountain, a snake demon ran out of the mountain, and then the gourd planted by Gong Yu turned into a gourd baby, driving the snake demon away, living in seclusion in a foreign forest, meeting a princess in a foreign land, and a witch was bitten by an apple princess.