很简单，双线回归中轴0就是买点，买了就赚

源码

AA:=REF(CLOSE,1);
 BBB:=SMA(MAX(CLOSE-AA,0),21,1)/SMA(ABS(CLOSE-AA),21,1)*1000;
 HHH:=BBB-LLV(BBB,27);
 CCC:=LLV(BBB,27)-BBB;
 QQ:(MA(HHH,2)*3+HHH*13)/16,COLORFF00FF,LINETHICK1;
 SS:(MA(CCC,2)*3+CCC*13)/16,COLORFF00FF,LINETHICK1;
 GG:MA(HHH,5),LINETHICK1,COLORGREEN;
 MM:MA(CCC,5),LINETHICK1,COLORGREEN;
 WW:IF(QQ  EE:IF(SS  S:0,COLOR00FFFF;