Single K-line and mutual K-line are Internet terms, and K-line in life is also called candle chart, which was first invented by the Japanese as a tool to record rice futures. During the Tokugawa shogunate in Japan, rice trading became more and more frequent, and a set of rice futures trading system and exchange was established. It was at this time that Sakamoto made a magnificent appearance.
Ben Zongjiu was born in a wealthy family. In order to study the rice futures market, record weather conditions year by year, study traders' psychology and deeply study historical price records, Ben Zongjiu even set up his own communication station, and set up a small station every once in a while to transmit market information with flags.
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The drawing of K-line only needs the opening price, closing price, highest price and lowest price in a certain period of time, and a complete K-line can be drawn. K line is divided into negative line and positive line, the negative line is generally represented by green, and the positive line is represented by red.
For the negative line, the closing price is lower than the opening price, while the positive line is higher than the opening price. Before there was a computer, all the people involved in the transaction drew the K-line by hand. With the development of computer technology, almost all trading software now supports K-line display.