Duoqi is a common candle chart (K-line chart), which usually appears in the price charts of financial markets such as stocks, futures and foreign exchange. The cross star indicates that the opening price, the highest price, the lowest price and the closing price of the market are almost the same in a certain period of time, forming a "cross" or "plus sign" shape.

The characteristics of the cross star form include:

1. The opening price and closing price are almost equal, and the difference is usually within 1%.

The gap between the highest price and the lowest price is relatively small, usually within 5%.

3. The cross star shape may indicate that the market is in a state of indecision or lack of clear direction.

4. The cross star shape may sometimes indicate the reversal or breakthrough of market trends.

However, it should be noted that a single cross star shape cannot be used as the only basis for forecasting market trends, and it needs to be comprehensively analyzed with other technical analysis tools and fundamental information.

In short, the cross star is a candle chart reflecting the fluctuation and trend of market prices, which may indicate the change or continuation of market direction. When analyzing the financial market, observing the cross star shape can be used as a factor to judge the market trend, but it needs to be combined with other analysis methods to improve the accuracy of judgment.