After the stock fell sharply after the emergence strong technical rebound. When the back up to a level, but dropped again, but decline more slowly, appear to support previous lows before the stock price before the arrival. When the second rebound, rising highest point higher than the highest point of the first, forming a wave higher than the wave of trends. When rebounded to a certain level, the stock price will fall again, but higher than the lowest point of the first down time highs. The two highest points in a line, and the other two will be the lowest point of a line, that see rising wedge.