From a scientific point of view, it has nothing to do with feng shui that pharmacies don't enter people. People usually need to go to the drugstore to buy medicine when they are sick. Drugstores don't enter, which may be because there are not many people who need to buy medicines nearby, or because there are many pharmacies nearby, which share the flow of customers who need to sell medicines.
Pharmacy refers to the retail point of drugs. Drugstores sell sleeping pills, cold medicines, laxatives, antipyretics and other medicines, which are convenient for people to buy medicines and beneficial to their health.