DIFF:=EMA(CLOSE,12)-EMA(CLOSE,26);
 DEA:=EMA(DIFF,9);
 MACD:=(DIFF-DEA)*2;
 DAYS:=IF(DIFF>DEA,BARSLAST(DIFF<DEA),BARSLAST(DIFF>DEA));
 AREA0:=SUM(MACD,DAYS);
 AREAM1:=REF(AREA0,DAYS);   
 AREAM2:=REF(AREAM1,DAYS);  
 AREAM3:=REF(AREAM2,DAYS); 
 HPRE:=HHV(L,DAYS);
 HPREM1:=REF(HPRE,DAYS);
 HPREM2:=REF(HPREM1,DAYS);
 HPREM3:=REF(HPREM2,DAYS);
 LPRE:=LLV(L,DAYS);

 LPREM1:=REF(LPRE,DAYS);
 XG:AREAM1>AREAM3 AND HPREM1<HPREM3 AND REF(MACD,1)<0 AND MACD>0 ;