Does the store need to leave a back door? feng shui

Hello: first, the back door: you have to look at the direction, the direction of prosperity: southwest, east and south, are prosperous. Second: whether the division of spatial pattern affects the pattern, such as the expansion of spatial utilization, can be closed without affecting the structure. Third: the back door can't hit the gate. Note: the door of the main gate cannot be smaller than the bedroom door. The highest principle of geomantic omen is the unity of heaven and man! Rational use of the surrounding environment is the right choice. Judge according to your own living environment, and don't cause unnecessary psychological burden because of judgment without any basis. If you want to know whether feng shui is good or not, you must first know the surrounding environment, followed by the DPRK.