Hand-drawn floor plan of a sales office center

Quick answer：

A hand-drawn floor plan of a sales office center is a visual representation of the layout of a sales office, typically used for architectural or design purposes. It includes detailed illustrations of walls, doors, windows, and furniture placement. Hand-drawn floor plans are less common in modern construction due to the availability of computer-aided design (CAD) software, but they can still be useful for personal or artistic projects.