To understand candlestick charts, one must pay attention to three points: First, the length of the body and shadows; a long body indicates strong bullish or bearish power, while a long upper shadow suggests significant resistance above. Second, the combination patterns, such as engulfing and morning star, can predict trend reversals. Third, consider trading volume; rising prices with increasing volume and falling prices with decreasing volume are more valuable for reference. At the same time, one should integrate different time frames to comprehensively judge market trends and buy/sell signals.