Recently, I went through my own trading notes and found that many losing trades were caused by not truly understanding K-line reversal signals. To be honest, technical analysis may look simple, but using it well definitely takes effort.

Let’s first talk about a phenomenon. When the domestic stock market opened in 1990, K-lines were introduced directly. But over the years, most research on K-lines has still remained within the old Japanese playbook: scattered statistics of single K-lines, double K-lines, and multiple K-lines—nothing truly systematic has been formed. After trading for so many years myself, I’ve come to a deep realization: just knowing the basics of K-lines is far from enough. The key is to recognize K-line reversal signals—this is the core that determines buy and sell timing.

K-line charts originated from rice market trading during the Japanese Tokugawa shogunate era, and later spread into the stock market. Put simply, it uses bullish and bearish candles to intuitively show price increases and decreases. The magic of K-lines is that they can relatively accurately predict the direction of what comes next, and they also make it clear to judge the balance of power between bulls and bears. The larger the bullish body, the stronger the buying pressure; generally, the market will rise afterward. The larger the bearish body, the stronger the selling pressure; generally, the market will fall afterward. Even the length of the upper and lower shadows hints at the tug-of-war between bulls and bears.

But there’s a pitfall that many people have stepped into: you can’t place an order just because you see a K-line. K-line chart analysis and indicators are only reference tools. Conclusions drawn from a single K-line or from a specific indicator may not be reliable. In actual trading, you must analyze specific situations in a concrete way; you can’t rigidly apply formulas without variation.

What I pay most attention to are five common combinations of K-line reversal signals. First is the Morning Star, a reversal signal that appears at the end of a downtrend. On the first day, there is a long bearish candle showing that the decline is still continuing. On the second day, a gap down with a doji or a hammer appears; the gap has formed, the decline starts to shrink, and on the third day, a long bullish candle appears as the bulls gain strength and the market improves. The opposite is the Evening Star: it appears during an uptrend and is a relatively clear reversal signal or pullback signal—this can be a good time to sell.

Next is the Red Three Soldiers: for three consecutive days, the closing price is higher than the previous day, each day’s opening is within the previous day’s bullish body, and the closing price is near that day’s highest point. When this combination of K-line reversal signals appears, the outlook is mostly bullish. Three Black Crows is the opposite. It consists of three days of long bearish candles, where each bearish candle closes below the previous day’s low; the price steps down gradually. When this pattern appears, it generally indicates that the stock price will fall further in the following period.

Finally, there is the Double Black Crows with gaps. This combination usually appears at a stock’s stage top. After the price rises for a while, the market first forms a long bullish candle. The next day, it gaps up, but the rally can’t continue and the candle closes bearish. On the third day, it gaps up again upward, yet it still closes bearish. At this point, the bulls’ attempts to push higher for two consecutive days fail and their momentum weakens, increasing the probability of an island reversal—this is a signal that requires vigilance.

My experience is that identifying these K-line reversal signals can indeed improve your win rate, but you must combine them with trading volume and other indicators to judge. Relying solely on K-line patterns makes it easy to be tricked. Moreover, the market is constantly changing, and even the most perfect K-line combination is not 100% accurate. The most important thing is to stay alert and adjust your strategy flexibly based on how the market responds. When you should take profit, take profit; when you should reduce positions, reduce positions. That’s how you can last longer in a volatile market.