Is a technical analysis method, as follows: first, according to the method of intraday point chart, set the price axis and the values of each point. Here x stands for rising, o stands for falling, and the two columns appear alternately. We only need the highest price and lowest price every day, and we can draw an X or O column. At the beginning of drawing, the front column is X column (indicating price increase), so look at the highest price of the day. If the highest price of the day requires us to fill in one or more X symbols, we might as well do it. This draws the chart of the day. Don't miss all the blanks until the highest price of the day. The score of the highest price should be ignored. The next day, we still only looked at the highest price. As long as it keeps rising to a new high and allows us to fill in at least one X in this column, we will repeat the above procedure and fill it in correctly, no matter what the lowest price is every day.