It is a Chinese exchange, but due to the restrictions there they are likely located in neighbour countries. If they are still located in China, then people can expect the Chinese authorities to raid them at any time of the day. That uncertainty alone (aside from it being shady or a potential scam) should be reason to avoid it.
Exactly. That was what I'm thinking as well.
If it was indeed located in China then the authorities have the right to shut it down or force it to go overseas at any time. That's completely unknown to us. If it's located overseas, then which country's jurisdiction does it fall under? All of this is uncertain.
I don't think there is much wrong with offering 0.1BTC max withdrawals. In the end it's their platform, and looking at the coins they have listed, they aim to attract the smaller traders. That lower withdrawal fee also helps them to avoid certain regulations that would require them to force through KYC/AML procedures. Nowadays exchanges have become a fort knox with their verification policies, so people tend to use these exchanges because of how 'open' they are.
That's a good point, but honestly small traders have better options like Binance. Big traders may deposit and only when they withdraw, find out that the min. withdrawal is 0.1 BTC without verification.
Anyways, all of these reasons combined just makes this a very risky exchange to use. I would not use them personally.