In mourning/kloc-within 0/00 days, men and women in future generations can get married. If it exceeds 100 days, marriage is not allowed within the third anniversary. If a newborn baby is born at home within 100 days of filial piety, it is necessary to pay homage to the ancestors to avoid unfilial.
During mourning, ancestors should worship properly on every anniversary and never forget it. If you forget, you should contact a trusted Tangkou master to help solve it. In particular, seven "seven-day sacrifices" and "one-hundred-day sacrifices" cannot be forgotten.
Finally, during the mourning period, if the ancestors reported their dreams and explained something to the later generations, it would be better to understand them according to their wishes. Never fool the dead, lest filial piety and bad luck haunt you.