Birthday can't be advanced, but it can be advanced, because in geomantic omen, it is actually an auspicious number in geomantic omen. The quality of a person's birthday also determines his luck, and his birthday needs to be advanced. Therefore, it is very unlucky to bring his birthday forward, which will damage his luck, especially for women, because only after marriage will something happen to her husband and children.
Whether a person's birthday can be celebrated in advance actually has a lot to do with his own birthday. It is not good to celebrate your birthday early, or to be born on a certain day, because special days will lead to different fortunes.
For example, people born on the fifteenth day of the lunar calendar belong to the same day and have special significance, so if their birthdays are advanced, their fate will be better, thus achieving a good situation.
For example, if someone's birthday happens to be a leap year, then his life will be smooth sailing. So generally speaking, having a birthday early will make people feel different from themselves, which will be very unlucky.