What do you mean, a bull market doesn't talk about the top and a bear market doesn't talk about the bottom?

It is difficult to reverse the formation of a major trend. The rising bull market will keep rising, and all adjustment platforms will be broken. The downward trend of the bear market will continue to fall, and all rebound platforms will be broken. Whether it is a bull market or a bear market, only one adjustment will be completed in the end. Therefore, the bull market does not say the top, and the bear market does not say the bottom.

A sentence in The Story of Wall Street: If the price keeps rising, do more until the price goes to the moon. If the price keeps falling, I will go to zero.

Therefore, the bull market buys positions and don't go out easily. Bear market should not enter the market with short positions easily unless the trend changes.

There are two main reasons for retail investors to lose money: heavy losses in bear market positions (quilt cover) and frequent entry and exit in bull market (little profit or no profit)