安全:-50,COLORRED,LINETHICK2;
风险:50,COLORBLUE,LINETHICK2;
中界:0,LINETHICK2;
ZF:=(C-REF(C,1))/REF(C,1)*100;
趋势线:EMA(EMA((C-REF(C,1)),6),6)*100/EMA(EMA(ABS((C-REF(C,1))),6),6),COLORYELLOW,LINETHICK2;
买点:=REF(趋势线,1)<趋势线 AND 趋势线<-50;

DRAWICON(买点,趋势线,19);