that means if you hack someone's computer and got his private key, this is crime, you are not allowed to hack other people's computer
then, you transfer his crypto to your wallet (steal his money) , this is NOT crime, because crypto is NOT property in China, it is just a piece of data, has no value at all in the Chinese Law
so let's say me and you are friends, i , for some reason, know your private key or password of your crypto wallet, then i can transfer your crypto to my︀ wallet and it is legal, you can't sue me for steal your crypto money
I learned this from offcial website of the SPP (Supreme People's Procuratorate of people's republic of︁ China)