1, the overall layout is not good, mainly because of the positions of gate M, gate Z and gate Y. The three doors are in a straight line, which does not conform to the layout of the house. This layout is unlucky at first glance, whether it is because of money leakage or evil. There are few such layouts in the building anyway. Door M should avoid looking directly at activities in the courtyard, such as moving a certain distance to the south to face the wall. Or build a screen wall directly opposite the gate.
Since Building 4 has been rented out, you shouldn't let them go to your backyard. Need to explain why? If outsiders invade, it is easy to cause trouble. It's better to build a wall between Building 4 and Building 5, so that a small courtyard can be formed without interference.
As for h and x, it doesn't matter much.