One reason ancestral rites are disappearing is because inheritance laws have become more equal

‌Starting from January 1, 1991, the law changed from the eldest son receiving 1.5 times more to everyone receiving an exactly equal 1/n share..
The eldest son and his wife have traditionally taken full responsibility for preparing ancestral rites because of inheritance...
Since assets are now inherited equally, I understand that rites are disappearing because there is no longer a reason to go through the trouble of preparing them..
But that's not entirely true; for a long time, almost all the responsibility was handled by the eldest son...
It gradually declined,
but the final blow was COVID-19...
The number of households stopping ancestral rites surged due to COVID-19..