Gap refers to a period of time when the stock price changes rapidly and violently, and there is no transaction, which is a vacuum area shown on the stock price chart. This area is called "gap" and is often called gap.

When there is a gap in the stock price, it changes for a few days or even longer, then reverses it and returns to the original price of the gap, which is called the closure of the gap. Also called filling a vacancy.

There are four kinds of gaps: ordinary gap, breakthrough gap, persistent gap and consumable gap. From the size of the gap, we can predict the strength of the trend and judge whether it is a breakthrough or the end of the trend. It is the most powerful auxiliary material to judge various types.

Ordinary gap refers to a gap that has no meaning, that is to say, there is no obvious bottoming or topping form in front, and it will usually be filled in a very short time, maybe three to five days, maybe ten days and a half months.

Breaking through the gap is relative to the ordinary gap. Before breaking through the gap, there are usually obvious technical forms of bottoming or topping, such as head and shoulder top, head and shoulder bottom, round bottom, double top, double bottom and long-term consolidation. Breaking through the gap is generally not made up in a short time.

Persistent gap refers to another gap after the breakthrough gap is formed, which indicates the continuation of strength and often leads to a bigger wave of ups and downs.

Consumables gap refers to the measurement gap that appears after the price rises or falls for a period of time. Gu Ming believes that this indicates a reversal, and the price rise or fall is already very weak. This is a standard four-notch operation. But not all gaps will take such steps step by step, so what we need to do is to accurately judge which gap it belongs to.

First, from the development of China stock market to the present, it should be that most of the gaps will be filled, that is, the gaps are usually filled.

Second, if it is not filled, it will certainly continue the above trend, so the key point is to judge what kind of gap it belongs to.

Thirdly, I personally think that the gap of 1600 is a breakthrough gap and should not be filled in the short to medium term.