(1) The index rebounded in the early stage due to favorable conditions. A k line with a long shadow line appeared at the bottom. Investors who are good at summarizing must attach great importance to this phenomenon. Some investors think this form is the bow at the bottom. This view cannot be completely wrong, but it must be analyzed in detail. If the index of the K-line and the intraday stock W are large enough, the bottom is likely to form a long shadow line. Otherwise, it should be suppressed.

(2) When the index just hit a new low of F, there also appeared a K-line with a long shadow line. Know if this is the signal that forms the bottom. First of all, it depends on the overall decline in happiness. Because the index has just broken, it has not yet formed a big decline, and the silent radiation of K-shares is not big enough. Then, the hope of forming the bottom at this time is! Small _

(3) When the long shadow line is formed, if it really rises, the index will soon pull out the large entity positive line. If there is no such trend, it is not a real rise, but the K-line is more likely to fall.