3 Chinese Coins - Real or fake?

I know many China coins are fake but is there an expert on this forum that can say for sure if these coins are real or not and why?

All 3 coins are non-magnetic*, 45.2mm diameter, and weigh 30 grams.

*The magnet slid off the 1st coin (Kwang-Si) but more slowly than the other 2.

Your first coin is a fantasy coin as Kwang Si province never made a one tael coin. As far as other Chinese "coins" always assume they are counterfeit until proven otherwise.

https://en.numista.com/catalogue/index.php?mode=simplifie&p=1&l=china&r=Kwang+Si+province&e=china&d=&ru=&i=&ca=3&no=&se=&v=&m=&a=&t=&dg=&w=&u=&f=&g=&c=&wi=&sw=&tb=y&tc=y&tn=y&tp=y&tt=y&cat=y&ct=coin
https://coinquest.com/cgi-bin/cq/coins.pl?coin=14124
https://www.ngccoin.com/resources/counterfeit-detection/top/chinese/

Welcome to Numista
fake/replicas...
https://www.thesprucecrafts.com/chinese-coin-counterfeiting-ring-4071202
https://www.silvercoins.com/fake-silver-coins-14-ways-to-spot-counterfeits/