The dragonfly line, also known as the T-line, is a single long positions reversal Candlestick in the 12 golden K, often used as a signal that a downward trend is about to pullback or end.

The dragonfly doji has no requirements for color; it can be a bearish candlestick or a bullish candlestick, but it has very high structural requirements. The most perfect situation is only allowing for a long lower shadow, not allowing for an upper shadow, and the body must be very short.
The dragonfly doji also has a deformed structure, allowing for an upper shadow but it must be very short.
Note:
1. In the early to mid stages of a downtrend, they are often continuation patterns.
2. The bottom that appears at the end of a downtrend is likely a signal that the trend is about to pull back or come to an end.
3. Do not discard the dragonfly doji immediately if it is not at a key level!
4. When you see a Dragonfly Doji, don't rush to enter the market; instead, wait for a second opportunity.