Choose time to trade
That is, choose a so-called "better time to buy or sell", which usually means buying when the price rises and selling when it falls. And people tend to choose most of the currencies that "perform" better than the market average.
For example, many people will continue to see the skyrocketing coins on Binance's popular currency increase list (although few people notice that there are no ever-victorious generals on it). These popular coins will have a larger trading volume. The more they rise, the more people buy, and the larger the trading volume.
At the same time, some contract players often perform leverage operations, such as shorting USDT when they are bearish, and then buying it back when the price falls. They can make money when the price falls, and they can also make money when they buy at the bottom. This is exactly the portrayal of most people in the currency circle
I think all these speculative expectations to judge the market trend, and the continuous buying and selling operations are speculative behaviors, and the cost of speculation is serious losses.