It is unlucky to see coffins in modern times, but in ancient times, as long as people are old, they will begin to prepare their own coffins. This practice means "crushing their lives" and is prepared for the elderly to live longer. In ancient times, the meaning of coffins was not as bad as it is now. Modern people think that coffins mean death, but in ancient times, coffins were considered to have different benefits for themselves and future generations. As I said just now, coffins mean "life suppression" for the elderly themselves, while good coffins mean "promotion and wealth" for future generations, so the meaning of coffins in ancient times is still good.
But wearing other people's shoes is really bad, just like comparing some women to "a whore" in ancient times, which is a very bad statement, especially for many men, wearing other people's shoes is an insult to themselves, so wearing other people's shoes in ancient times is not a good thing. In addition, in feudal society, shoes were considered as the representative of feng shui luck. Some people think that their shoes are worn by others and their luck will be taken away by others, so not only will others not wear shoes that others don't want, but the owner of the shoes won't want others to wear their own shoes.
But it's always good not to wear other people's shoes. In the case of underdeveloped ancient medicine, foot infectious diseases are difficult to cure. Therefore, from the medical point of view, it was a good thing not to wear other people's shoes in ancient times.