Trading generally adopts two sets of moving averages, long-term and short-term When the price moves below the moving average, it is a short trend, and the principle of shorting when the price retreats is adopted. If you judge the timing, you must operate the MACD deviation or slope; On the whole, the weak situation is to expand profits by breaking positions and adding positions, and the weak rebound is very weak, generally around the golden section 23.6; It takes some practice to grasp the timing slowly.