Most of the long-short power conversion refers to bullish, that is, bullish; Empty is bearish, that is, bearish. Because there is a lot of money involved in the stock market, no one can directly control the market. Some people may think that the stock market will rise soon, while others may think that the stock market will fall soon. If the current rally is under way, there are often more comparisons between long and short forces. However, once the increase is large, because people are psychologically worried about the decline, some bullish people will turn bearish, so that the number of bullish people will decrease and the number of bearish people will increase. Compared with bears, bears will account for the majority. This kind of conversion is called long-short weight conversion.

Weighted index: refers to artificially assigning a coefficient to some stocks that have great influence on the whole stock market according to the degree of influence on the stock market, and stipulating that the sum of all coefficients = 100%. The index formed by adopting this coefficient is called weighted index.

Stocks with smaller circulation: circulation refers to the total number of circulating parts of a stock. At present, stocks with circulation below several hundred million shares are generally called small-cap stocks. The opposite of small-cap stocks is large-cap stocks.