Please depict the back view of seven people sitting on an L-shaped sofa in the l

Please depict the back view of seven people sitting on an L-shaped sofa in the living room. Next to the sofa, there is a speaker, and the background features a large glass window with a view of the night cityscape. Outside the window, there is projection mapping, with colorful lights reflecting and blending with the night view. The overall atmosphere should be relaxed, with the details of the speaker and projection mapping beautifully rendered.