The sofa is an important piece of furniture in the living room. It is often used for meeting guests, chatting, and resting. The placement of the sofa is also very important. There are 10 principles for placing the sofa:

1. The length of the sofa should match the size of the room. For the sofa, you need to consider its length and width, whether it should match the size of the room. The height of the sofa should generally be below the knee. 

2. The sofa should not have sharp corners. The sides of the sofa should not be hit by the corners of cabinets, desks, kitchen corners, or dressing tables, which can easily cause migraines. Plants with thorns should not be too close to the sofa.

3. Do not place fish tanks or water objects behind the sofa. If there are fish tanks or water objects behind the sofa, it is a do-or-die situation. Therefore, do not place water objects behind the sofa. It is not good to place a fish tank behind the sofa. It is better to place the fish tank in front of or to one side of the sofa.

4. The sofa should avoid being pressed by beams. This will not create a sense of oppression, but will also be detrimental to people's physical and mental health. It is not good, so try to avoid it when placing the sofa.

5. The sofas should be arranged in an embrace shape. Sofas should not be placed in a row, but in an L shape, or two right-angled "凵" shapes. The embrace can store wind and gather energy, bringing prosperity to both wealth and popularity.

6. Do not have lights shining directly on the sofa. The light should generally be installed on the coffee table in front of the sofa, not directly on top, or strong light will shine directly from the back, which will make people nervous and dizzy when sitting on the sofa.

7. Don’t put a big mirror behind the sofa. You can hang a mirror on the wall, which will make the living room more spacious and transparent, but it is best not to hang a mirror behind the main part of the sofa. From the perspective of Feng Shui theory, mirrors have a reflective effect, so mirrors should not be hung in this position.

8. The sofa should not be in a straight line with the door. This is a conflict with the door, which is not good. In this case, it is best to move the sofa a little further away and not face it directly.

9. The sofa should have a backrest. The so-called backrest means a solid wall behind the sofa. If there is a window, door or passage behind the sofa, it will be empty and lack a sense of security.

10. The sofa should be placed in the auspicious direction of the house. The sofa should be placed in the auspicious direction of the living room. The sofa is where the family often sits and lies. If it is placed in an auspicious position, then the whole family can benefit. You can also place the sofa according to your own preferences.