KDJ is a stochastic indicator and a very popular short-term indicator in the world. K, D and J are just the names of performance indicators. Principle of the algorithm: \x0d\rsv= (lowest closing -N days)/(highest closing-lowest closing -N days) * 100\x0d\K is the M-day moving average price of rsv \x0d\D is the 0-day moving average price of M65438 +K \ x0d \ J is 3K. Gold forks below 2.20 are buying points, and dead forks above 80 are selling points. The second crossing of the high position is a big drop, and the second crossing of the low position is a big rise. The deviation between the stock price and the index is an excellent opportunity to operate \x0d\5, and the intersection around 50 is fixed \x0d\6. The reference of J line is of little significance, but it can be used as an early warning for the stock price to turn around x0d.