1. Determine a box according to the trend period (parameter), the larger the period, the larger the box; 
if the current price-the bottom of the box> the trend distance (parameter), the current is an upward trend; 
if the top of the box-the current price> the trend Distance (parameter), the current downward trend.

2. The trend is determined, and then it is time to determine overbought and oversold. Uptrend, and oversold, go long; downtrend, and overbought, short.

3. Overbought and oversold are determined by shock parameters. The oscillation period (parameter) controls the number of bars to be detected; 
the oscillation interval (parameter) controls the oscillation size; the oscillation level (parameter) controls the opening level.

4. The position can be closed according to the overbought and oversold level, or according to the profit points.