Ordinary residential room: a standard bedroom or living room will have an area of 40 square meters, which is enough to accommodate a double bed, bedside table, wardrobe and enough walking space.

2. Small office: personal office space, 40 square meters can provide enough space to place necessary office equipment such as desks, chairs and bookshelves.

3. Gym: For a family gym, 40 square meters of space is enough for a treadmill, dumbbell rack and some yoga mats.

4. Restaurant stalls: In the restaurant, several stalls can be arranged for 40 square meters to provide a limited number of seats for guests to eat.

5. Children's Playground: As a children's playground, 40 square meters of space can accommodate slides, building blocks and various toys.

6. A corner of the small library: set up a reading corner at home. A space of 40 square meters can accommodate several rows of bookshelves and a comfortable reading chair.

7. Art studio: Artists need such a 40-square-meter space for painting, sculpture or other forms of creation.

8. Pet activity area: For families with pets, 40 square meters can be used as the activity space for dogs, including the dog's bed, food and water bowls and places to play.

9. Outdoor terrace: In a villa or penthouse, 40 square meters of outdoor space can be used as a leisure terrace, with tables, chairs and plants.

10, Yoga Practice Room: For people who like yoga, 40 square meters of space is spacious enough to practice various poses.