How to deal with the window behind the feng shui layout office? What should I pay attention to?

Sitting with your back to the window and the light shining from behind will give people a comfortable feeling, but according to Feng Shui, it is easy to get help from the nobles because there is a backer behind you. If there is a window in the back, it is not only unreliable, but also empty and unlucky. And it must be noted that the windows of the office can't be blocked, which is equivalent to blocking gas and money.