Descending stage: Usually, the left side of the V-shaped descent is very steep and lasts for a short time.

Turning point: the bottom of the V shape is very sharp. Generally speaking, it takes a short time to form this inflection point, and the volume of transactions increases significantly at this low point. Sometimes the turning point occurs in a panic trading day.

Recovery stage: then the stock price rises from the low point, and the trading volume also increases.

When the stock price breaks through the top of the V-shaped wandering area, it will inevitably be accompanied by an increase in trading volume, while when it falls below the bottom of the V-shaped wandering area, there is no need to increase trading volume.