Just remember the reputable platforms; others carry risks. Binance is the largest globally, and OKEx is the largest domestically. Just stick with these two. Generally, if you find someone for testing, there will also be 10-20 points of rebate fees. Currently, Binance is a bit safer for deposits and withdrawals, while OKEx has been regulated, you know what I mean. Remember to make small, batch withdrawals and not to do it frequently.
Other shady platforms may offer you huge rebate fees, like 50-80 points, but the bottom line is: you are greedy for their fees, and they are greedy for your principal. In the end, you won't be able to withdraw a single penny.
I have been scammed myself, putting 40,000 yuan into a shady platform to trade (at that time this platform was quite popular and looked reputable). After half a year, I lost several thousand in fees, and when I wanted to transfer money to Binance, I couldn't withdraw. When I asked customer service, they said there was a hacker attack, and I couldn't withdraw temporarily. I kept asking for a week, and in the end, I couldn't even log into the app. After checking online, I found out the owner had run away. I heard later that the owner's grave was found and people had vandalized it. So don't go for platforms that promise high returns; it's better to stick with reputable ones like Binance or OKEx, where your money is safer. They have no need to scam you out of your tens of thousands of yuan.
Fees are meant to save you money, not to help you make money. You need to understand what you are here in this circle for.