Why the number showing on the web page can't be copied correctly. Let's SEE:

Can see:

215.8w
328
28

But these three number will be copied as below:

궪궬ꪽ.껭w
뺻궪껭
궪껭

And if check the number's HTML source code, it's not number, but strange character as above showing.

And my question is mainly about how to build things like this, and how to get the real number by copy.

here is the web page, the strange numbers at the top: https://live.kuaishou.com/profile/3x43wyt3vgk3hcc