I believe one of the reasons there were few cats around is basically because they used to consume them. And every now and then the restaurant pet cat catches would pick up an kitty they may find and take them back to the restaurant. I remember seeing cats in glass shows out leading of the restaurants. But somewhere within then and today they prohibited eating felines. So cats are now not on the menu and now there are cats everywhere. Many of them began in someone's house and received thrown away, because so many are very friendly. Also they may have this thing about tummy worms. And in those days China had not been as modern as now so belly worms is a problem. Fleas are not really a problem because they have got tile flooring and real wood furniture.
If this frame of mind towards cats dates back generations the other can realize why historians say the Black colored Death started in China. Where there are rats and no cats then the rats dominate and that could have been a precursor for the condition to get near to people. Now whenever i get back to China you may still find rats playing around but not so many in the cover estates. There are lots of down by the river. Also they have a very efficient rubbish clean up system that keeps the places very clean. Where I stay the rubbish is collected everyday. That could also keep the rat people down. And with so many discarded pet cats running around the rats don't possess much of an opportunity. I've never seen this but I suspect the government accumulates a great deal of cats. There used to be colonies of stray cats residing in some places but now I don't see them any longer.
Felines and mankind have been residing in harmony for many years but that hasn't always been the truth. There were times when pet cats have been practically wiped out in the name of God. And what happened the Black Death reigned supreme for considerably longer than it should. So we will go back to the beginnings of recorded record to enough time of the pharaohs of Egypt. Here felines were revered as Gods and many were mummified to last for eternity. Because the pet cats guarded the grain warehouses and wiped out the rats and mice that given on the grain. Therefore lowering famines, which were the curse of Egypt. It was illegal to get rid of cats in those times, like cows in India today.