A1A:=Ema(CLOSE, 9); A1B:=((A1A - EMA(CLOSE, 5)) < 0); A1D:=BArslAst(A1B); A21:=IF((A1D > 0),(0 - 2),0); 红球:((REF(A21, 1) = (0 - 2)) AND (A21 = 0));