How to determine the validity of a support level?

Many people focus only on whether there is a support line when looking at support, but overlook a more important point: although it is still support, the reliability differs completely depending on the confirmation method.

The worst-case scenario is that the price confirms the support level and is then quickly pushed back down. A long upper shadow is a typical characteristic: it indicates that the buying pressure tried to take over, but the strength was insufficient, and it was directly suppressed by the selling pressure. This type of support, even if the position is drawn accurately, does not have entry value.

In moderate situations, a decent quality rebound candle appears after the price approaches the support level, but the upper shadow is still present, indicating that the upward momentum is average. It tells you that buying pressure is attempting to take action, but whether it can continue needs to be confirmed by the following candles. The market often rebounds from here, but the sustainability is not that stable.

In the best-case scenario, a clean reversal candle appears after the support confirmation, with no upper shadow and a clear body. The price is caught by buying pressure as soon as it touches the support and directly advances towards the previous high. This structure not only resembles a rebound but is more like a true bullish takeover.

The last and most important point is that only after a rebound (waiting for the right side) can we stabilize the determination of the support level's validity; otherwise, it is just "gambling" on its validity.