I Have Some Chinese Coins I'm Trying To Identify

So I have some chinese coins, that I'm assuming are fake. I've been going through my coin collections recently and I found these things in it, and I kind of want to know what their deal is. I would google it, but since they're in chinese I can't really do that. Pretty much what I want to know it if they're counterfeits, what kind of coins they are, or are counterfeits of, how to verify either way, what they say on them, where they're from and, of course, if they're worth anything.

1st coin (description because I know the photos suck): front side: english says Sungarei above a dragon, and 1 Teal below that. Other side is a bunch of chinese characters. Edge has various characters, and also english lettering that spells out Da Qing Zao Bi Chang
its a slightly brownish silver and is about 4.5 centimeters in diameter (don't know the weight of any of these)

2nd coin:just characters on both sides, one side with just four, the other with four big ones surrounding four smaller ones. it's silver colored and not quite four centimeters wide. It's also the only one that reacts to a magnet.

3rd coin: one side just has swirly designs, the other is four big characters. It's bronze with a square hole in the middle, and about 4.25 centimeters.