My family wants to build a house on the farm, but the terrain of my family is the same as that of my neighbor in the east, but the terrain of my neighbor in the west is 2 meters lower than my family.

Of course, there is nothing wrong with feng shui. The problem is your west neighbor's house. Generally speaking, the neighbor whose house is taller is whose house is above others' (so there are many fights between neighbors in our hometown). As for the terrain, I'm not sure. I need to consult experts according to the local soil quality.