The main text begins below. Most friends can skip it as it is of no help in terms of price.

First of all, why bother about whether it is a bear market or a bull market?

Because the buying and selling strategies are different in different cycles, every decline in a bull market is an opportunity to buy at the bottom, while in a bear market, what is more important is the judgment of the position. Although they are all buying 
at the bottom, the methods and intensity of buying at the bottom must be different.