The general direction of the weekly chart of the big cake is clear bearish, and the rebound belongs to weak repair. Currently, it is in a long-term weak oscillation (about 97 days since the adjustment on February 6, nearly 100 days), and the rebound strength is extremely weak, and it has not been able to break through the key resistance. Key resistance: MA200 moving average+daily Vika tunnel upper edge: Double strong pressure, yesterday's rebound highest only reached 81900, after touching, the pressure fell back, unable to effectively break through, overall in a downward channel with high and low points continuously moving downwards, belonging to the top range oscillation pattern Market nature: A large number of retail investors in the market have followed the trend of short selling, but the price has never been able to reach a new low. In the past two weeks, it has slowly risen and repeatedly tested high levels, which belongs to a weak rebound+grinding oscillation, and is not a reversal signal; The overall direction is oscillating sideways, with a bearish outlook in the medium to long term, waiting for confirmation of a break. Short term key pressure reference 82000, before breaking through, stick to the high rebound mentality, see the market return to the downward channel, and test the previous low point.