To understand candlestick patterns, three points need to be considered: First, the length of the body and shadows; a long body indicates strong buying or selling power, while a long upper shadow suggests significant resistance above. Second, the combination of patterns, such as engulfing and morning star, can help predict trend reversals. Third, consider trading volume; an increase in price with an increase in volume or a decrease in price with a decrease in volume is more valuable as a reference. Additionally, it is essential to combine different time frames for a comprehensive judgment of market trends and buy/sell signals.