突破前20日高作多，止损30点，如有获利反向突破前10日低平仓获利出局；突破前20日低点作空，止损30点，如有获利反向突破前10日高平仓获利出局(Break through more than 20 high before, stop 30 points, such as low profit reverse breakthrough before 10 positions profit out; Break through the former 20 lows short, stop 30 p