Feng Shui master's curse is a superstitious behavior, and there is no scientific basis to prove its authenticity. Leaving three nails on the roof is a building technique, which is used to fix the boards or tiles on the roof. The specific operation method is to punch three holes in the roof panel and fix the panel on the roof with nails. This practice is to prevent the roof from leaking or being damaged and ensure the safety and comfort of the house.
Therefore, we should treat all kinds of superstitious behaviors rationally and don't blindly believe and spread false information. At the same time, we should also pay attention to protecting personal privacy and personal information security to avoid illegal infringement.