5日、10日价格均线跌破20、30日均线形成一个井字这是天上井，在此前后同样周期的量均线也形成这样的井字，

M1:=MA(C,5);

M2:=MA(C,10);

M3:=MA(C,20);

M4:=MA(C,30);

TSJ:=COUNT(CROSS(M3,M1),21)=1 AND COUNT(CROSS(M4,M1),21)>0 AND

COUNT(CROSS(M3,M2),21)>0 AND COUNT(CROSS(M4,M2),21)>0;

MM1:=MA(V,5);

MM2:=MA(V,10);

MM3:=MA(V,20);

MM4:=MA(V,30);

DXJ:=COUNT(CROSS(MM3,MM1),21)=1 AND COUNT(CROSS(MM4,MM1),21)>0 AND

COUNT(CROSS(MM3,MM2),21)>0 AND COUNT(CROSS(MM4,MM2),21)>0;

ZTJ:=COUNT(TSJ,13)>0 AND COUNT(DXJ,13)>0;

ZTJ AND (REF(BARSLAST(ZTJ),1)>20 OR BARSSINCE( ZTJ)=0);