When watching the market, there is a phenomenon in the volume-price relationship that is particularly worth following — a doubling of volume followed closely by a reduction in volume. This pattern may seem simple, but it actually reflects the market maker's deep control over the market trend.

Specifically, this pattern most commonly appears in three positions:

**First Position**: The price breaks through a certain resistance with increased volume, but the next day it decreases in volume and tests the support. Don't be scared by the pullback; this is often the market maker testing the stability of the market.

**Second position**: A strong bullish candle with double volume appears at the bottom, indicating that the market maker is building positions strongly. Following this is a period of sideways consolidation where the market maker begins to lock in positions, and at this time, the trading volume rapidly shrinks becomes a common occurrence.

**Third Position**: On the day of the limit-up, there is a significant increase in trading volume, and the next day, there is a direct one-word board with reduced volume. In this case, the market maker's strong attitude is evident— the chips are already firmly locked.

Why is this pattern so important? In an upward trend, a double volume often represents two situations: either the market maker is aggressively buying or it is testing selling pressure. If this phenomenon occurs during a mid-term increase, it is basically a signal that market enthusiasm is starting to ignite.

Then the next day's scaling volume becomes intriguing. This is a market maker's washout performance, but at this time the decline is usually not too severe, and sometimes it even just consolidates sideways. It is this sudden shrinkage in volume that reflects the chips being highly concentrated in the hands of a few—forming a stark contrast with the enthusiasm of the previous day.

The volume doubling and reducing patterns at these three positions are worth paying special attention to in practical combat. Mastering it gives you an additional window to understand the market rhythm.