"Random oscillator" is the scientific name of "KDJ", and the standard translation is "random oscillation index"

In foreign languages, "random" means random, and this indicator consists of three indicator lines: "%k", "d" and "j", so mainland investors affectionately called it "KDJ" when they first introduced this indicator.

The function of the shock index is to observe the oversold and overbought prices in the consolidation market, or to observe the "deviation" phenomenon of prices and indexes in the unilateral market.

At present, mainstream foreign exchange charts have abandoned the "%J" line and only taken "%K" (fast line) and "%D" (slow line) to observe the oversold and overbought prices.

I hope it helps you.