There is a mountain behind my house, and there is an old house less than one meter in front of it, and it is three or four steps higher. Is there any way to resolve it?

Nothing, you want to ask about Feng Shui? Is the front room blocked by the back mountain? Shanyin, Fangyin. Only high and sunny. If you have the conditions, build your house as high as you can so that the sun can illuminate all the rooms. If there is a living room in front, then you can set back the main house as much as possible to facilitate your entry and exit. The house will be ventilated and illuminated for a long time. However, remember that the door should not face the corner or eaves of other people's houses.