Why do the 18th and 19th century buildings in Europe still look good, while many old houses in China look very shabby?

I want to correct you here. You think that there are many houses built in Europe in the 18th and 19th centuries, because those you see are fine works, and you haven't seen many houses for ordinary living. You think that most of the houses built before liberation in our country are dilapidated, because that is ordinary residential houses. The Forbidden City is hundreds of years old, and many temples and pagodas in China are hundreds or thousands of years old, which is much older than those in Europe. Isn't it nice? It is meaningless to compare fine products with fine products and ordinary things with ordinary things. Fine things, everyone will care to maintain, of course, it will last longer and not worn out.