(1) Superstition holds that the deceased ancestors came home from the sky to enjoy sacrifices at the end of the year (some said the 28th of the twelfth lunar month, others said the 29th or 30th);
(2) If the ancestors saw "outsiders" at home, they would not enter the home;
(3) Married women are regarded as "outsiders";
(4) So married women can't spend New Year's Eve and the first day at home;
(5) After the ancestors enjoy the sacrifice, the daughter can go home when she returns to the sky in the evening of the first day (or the second day).
(6) On New Year's Eve, the daughter-in-law can't watch the bride's family lights, but watching her father-in-law die is a saying.
This rule was very strict in the old society, especially in the countryside. Violating it is disrespectful. Although people in the new society don't believe in ghosts and gods, they still strictly abide by them. If a married daughter spends the New Year at home for some special reason, then maybe her parents, family and herself will be very unhappy. This is also a long-standing cultural phenomenon, which may be implemented for a long time. It is such customs, traditions and even bad habits that together form the annual customs taboo.