First of all, the daily weekly line is the time period of K-line, and the daily K-line is the graphical representation of the closing price of the highest opening price and the lowest opening price of a trading day. Weekly K-line is a graphical representation of the opening price of the first trading day and the closing price of the last trading day in a trading week, that is, the highest price and the lowest price in five trading days. The monthly K-line is a graphical representation of the opening price of the first trading day and the closing price of the last trading day in a trading month, that is, the highest price and the lowest price in about 20 trading days. According to the opening price, highest price, lowest price and closing price of each analysis period. K-line chart is based on drawing daily K-line as an example. First, determine the opening price and closing price, and draw the part between them into a rectangular entity. If the closing price is higher than the opening price, the K line is called the positive line, which is represented by a hollow entity. On the contrary, it is called a negative line and is represented by a black entity or a white entity. Many softwares can use colored entities to represent negative and positive lines. In the domestic stock and futures markets, red is usually used to represent the positive line and green is used to represent the negative line. However, investors who participate in European and American stock and foreign exchange markets should pay attention to the fact that in these markets, green is usually used for the positive line and red for the negative line, which is just the opposite of domestic habits. ) Connect the highest price and the lowest price with the entity with thin lines. The line between the highest price and the entity is called the upper shadow line, and the line between the lowest price and the entity is called the lower shadow line.