Is the high-rise building in another community behind the building a backer?

Count. Backing the mountain means that there is a mountain or a building behind the house, but there is no mountain or a building, that is, there is no backing. There is a mountain or a building behind the house, which is higher and wider than this building, which is very powerful for the backer; The building behind the house is as high as this one, which is more conducive to the back. If the mountain or building behind the house is much lower than this building, it is generally because the backer is weak.