Why do some people say that the Twenty-four Filial Piety is foolish filial piety?

It was Lu Xun who suggested that a lot of the Twenty-four Filial Piety is foolish because many of the ideas in the Twenty-four Filial Piety are different from what we know now, and there is a lot of feudalism in it, which overemphasizes the importance of filial piety and leads to the word filial piety being tainted. Our so-called "twenty-four filial piety" contains:

Filial piety moving heaven, play color entertainment, deer milk to serve their parents, 100 miles negative rice, eroding finger pain in the heart, reed clothes to follow the mother, the pro taste of soup and medicine, picking up the blackberry is a device, burying children to serve their mothers, sell their bodies to bury their fathers, carving wood to serve their parents, spring leaping carp, pregnant orange left their parents, fan pillows and warm coverlet, line commission for the mother, heard the thunder weeping tomb, crying bamboo shoots, lying on the ice to seek carp, strangling the tiger to save his father, want mosquitoes full of blood,

Some of these things are worth emulating and learning from, but some of them are not worth learning from. For example, one of them is burying his son and mourning his mother. Guo Ju originally had a good family. After the death of his father, he divided the family property into two, to the two younger brothers, their own mother alone to take the support, the mother is very filial. However, his family became poorer and his wife gave birth to a boy. Guo Ju was worried that if he raised this child, it might affect his mother's support, so he discussed with his wife, "A son can be born again, but a mother cannot be resurrected after death, so why don't we bury our son and save some food for our mother's support?" While he was digging a pit to bury his son, he inadvertently discovered the gold buried in the ground, so the mother and son were preserved together. But honestly, in modern times it means that if you are poor, don't do anything, just stay at home and raise your parents until they die in peace. But I don't think that's possible. If you let your parents live in peace, are they really happy? Do they really want you to do that? As parents or as children we should think about it.

So we can't say that the Twenty-Four Filial Prayers are all foolish, as the saying goes: All good deeds come first. We should learn the good inside, take the essence, remove the dross. The first thing you need to do is to take the best out of it and get rid of the rest.