指标提示+20线支撑=介入！！
指标提示+55线支撑=介入！！
指标提示+无均线支撑+收阳=介入！！

A:=C B:=COUNT(A,4)=4;
D:=OBV-MA(OBV,30);
E:=MA(C,20)>REF(MA(C,20),1) AND MA(C,55)>REF(MA(C,55),1);
XG:B AND D>0 AND E;