1, high yinxian: In a rising trend, when the stock price rises to the opposite top, a heavy yinxian appears, telling investors that they should be decisively out. This is a sell signal.

2. As a top form, the high big yinxian indicates that the stock price will start to fall in the later period, which is a short-term selling signal.

3. According to the size of Yinxian entity, Yinxian can be subdivided into big Yinxian, middle Yinxian and small Yinxian. The negative line with a physical decline of less than 3% is a small negative line; When the entity falls between 3% and 7%, it is a negative line; A negative line with a real amplitude greater than 7% is a big negative line.