What are the feng shui taboos at the gate?

"The door of the shop is too small. According to the theory of geomantic omen, they narrowed the air outlet of the shop, which was not conducive to gas collection, so that the inflow of gas was reduced and slowed down, thus reducing the anger in the house. For commercial activities, if the door as an access channel is too small, it will bring inconvenience to customers. If customers want to mention goods, they will bump into each other, which is likely to damage the goods that have been sold. Narrow doors can also cause people to be crowded. Crowded people may make some customers stop when they see it, and disputes and pickpocketing will also occur among customers because of crowded people, which will eventually affect the normal business order of the store. Therefore, it is best to widen the store doors or even tear them down. The expansion of the store door has also expanded the so-called feng shui "window". The airport can collect a lot of money to avoid other improper incidents, thus ensuring a good business order of the store.