The reason why futures draw the three-day golden section is based on the theory of technical analysis. The three-day period is considered to be a relatively stable period, which can better reflect the long-term trend of the market. By dividing the price data into three days, we can observe the price fluctuation and trend more clearly. This method helps to filter out short-term noise and provide more reliable signals to guide trading decisions. At the same time, the three-day period can also adapt to the price fluctuations in different market environments, making the analysis results more universal and reliable. Therefore, choosing the three-day golden section of futures can capture the market trend more accurately and improve the accuracy and success rate of trading decisions.