The starting point of the percentage line is people's psychological factors, which is the dividing point of some integers. When the stock price continues to rise to a certain extent, it will definitely encounter pressure. When you are under pressure, you should retreat downward. The location of the retreat is very important. The golden section provides several price points, and the percentage line also provides several price points. Multiply the difference between the lowest point at the beginning of this rise and the highest point at the beginning of the downward decline by several special percentages to get the possible position of the future support level. Let the low point be 10 yuan and the high point be 22 yuan. These percentages are *** 10, and they are: 0.125 0.25 0.375 0.50.625 0.751.33 0.67. The same is true of futures!