No one is happy to take a family photo, but according to the traditional saying, "get together and leave", if many people get together, it means they will face the risk of leaving, and naturally someone will die, which is not very auspicious. Therefore, in order to avoid such superstition, many families require that there must be one less person in the family photo.
From the perspective of geomantic omen, it is unlucky to take a family photo, because it will be bad for the photographer to get together with the whole family, because it will remind the gods that the whole family is too primitive, but it will bring disaster. Solemnly declare: the answer is for reference only, please don't be blind _ superstitious.