It is risk control rather than prediction that determines the life or death of trading! This article provides an in-depth analysis of how to accurately lock the profit and loss boundaries through an intelligent risk control matrix (stop loss, take profit and guaranteed stop loss) and overcome human greed and fear. Popular Science restores the core value of free real-time simulation accounts in risk-free strategy backtesting, and explores the ultimate adaptation of Contracts for Difference (CFD), which has no fixed expiry date and no need to move positions to months, for short-term intraday swing trading, to help you reshape quantitative disciplines.