1, K-line is a kind of columnar line that records the price change of securities in unit time, which is divided into two parts: entity and shadow line. The two ends of the entity represent the opening price and closing price respectively, and the two ends of the upper and lower shadow lines represent the highest price and the lowest price respectively. According to the length of time unit, it can be divided into daily K line, weekly K line and monthly K line. It can also be used for market index, etc.

2. The drawing of K-line chart of stock market and futures market includes four data: opening price, highest price, lowest price and closing price. All K-lines are centered around these four data, reflecting the general situation and price information. If you put the daily K-line chart on a piece of paper, you can get the daily K-line chart, and you can also draw the weekly K-line chart and the monthly K-line chart.