Two floors is good, but it's actually two floors? It's just a little more space. You don't need that much space, do you? Secondly, the second floor is not so hot in summer! I think in plain Gai Lou, buildings are built by mountains (there are many mountains and earthquakes, and the square is easy to escape), and the square is more convenient than buildings.

The following is a two-story self-built building design of 10X 10:

If you feel good, add some points and pay attention!