First, a single-story house should not be built on a mountain ridge or at the entrance of a valley, as this not only fails to gain geographical blessings but also makes the residents prone to various diseases, which is detrimental to people.
Second, a single-story house must absolutely not be built at the intersection of a T-shaped road, that is, at the vertical point of the vertical line, meaning that there should not be a straight alley or road directly facing the front of the house. Otherwise, it will bring endless disasters, such as wind disasters and fires. This kind of house is especially vulnerable. If unlucky, it may bring disaster from the sky, like a car driver or someone drunk rushing straight into the house from the opposite direction. In the worst case, the house might collapse and people might die; in the best case, it could lead to disability, business losses, and legal troubles.
Third, a single-story house should not be built at the lowest part of a dead-end street. Such buildings may attract natural disasters and misfortunes, as well as legal disputes, financial loss, and disability.