Trading things stocks, bonds, equities, currency and energy through exchanges or brokers is something people can learn to do their whole life and still be terrible at. In any case I can't tell what kind of trader you are asking about? I'll use the auto-translator to help with meanings (and hopefully not make it worse). Financial Trader - 金融贸易商? Product Trader - 产品贸易商 ? Money Trader - 金钱贸易商? Equities (stocks) Trader - 产权贸易商? etc... Can you clarify maybe?