How to crack the back window of sofa?

In the traditional geomantic omen in China, it is forbidden to put the seat in front of the window, so putting the sofa in front of the window also belongs to this category, and it is best to move it. If the sofa can't be moved at home, there must be some remedies, such as placing bonsai and green plants on the windowsill to imply that there are mountains and trees behind, thus achieving the effect of leaning against the green hills.