Why can't you hang words on the back of the sofa?
On the other hand, I think according to the traditional hanging method, the most important calligraphy and painting is placed in the middle of the room facing the door, that is, the side facing away from the owner, which is equivalent to the back of the sofa now.
Of course, the difference between ancient halls and modern living rooms lies in the different positions of doors. Now the door usually faces the TV, and the sofa is in the back. Facing the sofa at the door may make young people more uncomfortable and feel that they will be seen as soon as they enter the door.
If you feel taboo, you can also hang it in another position, as long as it is comfortable.
On another level, the back of the sofa is indeed the most suitable place to hang calligraphy and painting, especially large calligraphy and painting. Because it's hard to find other good places for interior decoration now, isn't it?
Many of my relatives are like this. There are big paintings hanging behind the sofa, and many people are thriving. But this is mainly a human problem. It has little to do with the position of calligraphy and painting.