It is easier to understand the value of stocks, such as the price of stocks within 20 days. Hub is defined as the part of a certain level of trend type that is overlapped by at least the first three consecutive strokes, which constitutes the hub. By level: annual line, seasonal line, weekly line, daily line, 30 minutes (or 60 minutes), 5 minutes (or 15 minutes), 1 minute center. By direction: rising center and falling center. From the definition of hub, we can see that in the consolidation, the trend type of leaving or returning to hub without authorization must be below the second level, otherwise it will become an extension of hub; Similarly, in the trend, it must be the trend type below the sub-level connecting two hubs at the same level.

There are only three trends: upward, downward and consolidation. For example, once the decline is completed, that is, the strength of the trend before and after runs counter to each other, it will turn into consolidation or rise. In either case, this turning point is the first buying point, and then the low point of the first sub-level callback in the trend is the second buying point. On the contrary, the selling point is. There are also levels of trading points. Because the trend of the big level is synthesized by the small level, the second type of trading point of the big level is the first type of trading point in the corresponding small level diagram.

You can use three strokes to determine the height of the center. There are two high points and two low points in the three strokes, the two high points are lower and the two low points are higher. The vertical height between these two points, one high and one low, is the height of the center, the high point is the upper rail of the center and the low point is the lower rail of the center. Draw a rectangle according to these two points, which is the center.

The width of both sides of the center is generally not limited, but for the sake of coordinate observation, the left side generally takes the overlapping part of the first stroke. Generally speaking, the extension of the center cannot exceed 5 segments, that is, once 6 segments are extended, plus 3 segments that form the center themselves, a larger hierarchical center will be formed, that is, the center growth. Before the trend center of a larger level is generated, the trend type of this level will continue, which is also the consolidation or continuation of the trend center of this level. If and only if the fluctuation intervals generated around two consecutive trend centers of the same level overlap, a larger level center will be generated.