If you have two cats at home, cats are easy to fight because they have a strong sense of territory. Moreover, according to superstition, it is very unlucky to raise a pair. And if you want to have more cats, you'd better avoid mixed breeding. Why can't we have two cats at home? Cats have a strong sense of territory. If you have multiple cats at the same time, they are easy to fight. At the same time, it is more troublesome to take care of two cats, so generally speaking, it is good to have a cat.
Some people are superstitious about geomantic omen, and think that odd numbers are yang, even numbers are yin, and double is homophonic with injury, so it is very unlucky for cats to keep double. Of course, this folk superstition has no scientific basis.
How many cats to keep can be decided according to your actual situation. If you want to have more cats, you'd better avoid mixed breeding. Otherwise, every estrus, male cats will take the initiative to mate with female cats.