1. Floor: ceramic tile, solid wood floor or composite floor.

2. Wall: The wall is decorated with paint or wallpaper, which is basically waterproof.

3. Ceiling: The ceiling is painted and can be decorated with ceiling and decorative lines.

4. Bathroom and kitchen: The bathroom and kitchen are equipped with basic bathroom equipment, sinks and cabinets, which are waterproof.

5. Circuit and lighting: provide basic circuit layout and provide lighting.

6. Doors and windows: provide assembled doors and windows.