Factory carport geomantic omen

In the south of the yard, build a color steel carport from the doorway to the screen wall, which is high outside and low inside, so that rainwater can flow directly outside. From the perspective of geomantic omen, 1 must be a double-sided slope, not a single-sided slope, which is easy to break money. Theoretically speaking, it is a good thing to have more tap water, running water and roof water in your yard. People who don't know are often like you.