At the beginning of 2017, I unexpectedly encountered the cryptocurrency world. In the bull market of 2017-2018, I invested 60,000 and eventually earned over 10 million. In the bull market of 2020-2021, relying on almost 10 million, I had a maximum floating profit of over 40 million. I am still continuing to make money through cryptocurrencies; once you have an epiphany in trading, it feels like you are using a cheat code. At the end of last year, I played around with 200,000, and now I've made about 20 million, effortlessly achieving a hundredfold profit (suitable for everyone). 2. The KD indicator has a very high accuracy for the overall market and popular coins, often used to determine the nature of the market index to guide whether to go long, short, or stay on the sidelines. 3. The KD indicator is not suitable for coins with a small issuance and low trading activity; highly speculative coins are not applicable. 4. The KD indicator cannot determine the magnitude of rises and falls; it must be combined with other methods such as wave theory and Gann theory to make judgments. 5. The dulling of the KD can lead to a loss of direction. For coins in a main upward wave, there’s no need to look at the daily KDJ. Because during this time, the daily KDJ often becomes dull. Those who are accustomed to using KDJ often find it very difficult to catch strong main upward waves. Why? One possible reason is that they forget that the KDJ is dull, thus limiting their thinking and operating patterns. Finally, the price changes of cryptocurrencies vary with market adjustments; weak coins and strong coins behave very differently in the overall market, so it is essential to balance the relationship between the overall market and individual coins. Indicators are indispensable; the KDJ introduced above is just one of many indicators. Once you find that this indicator is not well suited to the current market conditions, you should optimize or even change it, and look for the most ideal parameter indicators for analysis.