All technical analysis of the relationship between volume and price is based on the divergence of the following essence: a relatively low increase in volume or a decrease in volume, with a high probability of a subsequent increase; a relatively high level of increase in volume or a decrease in volume, a subsequent high probability of a decline; a relatively low position in a decrease in volume, a high probability of a subsequent increase. To stop the decline, it will fall with heavy volume at a relatively low level, and then it is likely to rise. If it shrinks from a relatively low level, it will likely rise later. If it shrinks from a relatively high level, it will likely rise later. Note: 1. The above essence is applicable to situations where the market does not rise or fall sharply or continues to be extremely depressed. 2. At the same time, specific issues need to be analyzed in detail.