OK for the commission, but what about the transaction tax ? It's 0.2% on a full trade, that makes a significant difference to one's Pnl, or am I missing some exemption ?
Did you check how (un)profitable are the other HK stocks daytraders in your team ?
500 trades instant 100% lose. Some japanese day trader make more than 1000 trades per day in japan, doing that is suicide in hk market