After entering the computer age, well-funded large institutions have gained greater market advantages through program trading and high-frequency trading. The competition between "smart money" and "dumb money" has become more intense. In contrast, small to medium-sized specialized institutions and skilled individual traders have developed naked candlestick trading strategies, gaining asymmetric trading advantages to successfully counterbalance large institutions. Naked candlestick trading has thus become the mainstream trading technique in the world today, particularly in the A-share market, delivering a significant blow to traditional technical analysis traders with its clear system advantages.This book explains the four main systems of naked K-line trading from the perspective of practical scenarios, covering the principles and tools of naked K-line technical analysis, techniques for entering and exiting trades, risk control systems based on trading mathematics, and training methods for naked K-line traders. It aims to help readers learn about naked K-line trading and master concise, intuitive, and efficient techniques through self-training.