aa:=100*(c-llv(l,5))/(hhv(h,5)-llv(l,5));
bb:=100*(c-llv(l,10))/(hhv(h,10)-llv(l,10));
cc:=100*(c-llv(l,20))/(hhv(h,20)-llv(l,20));
dd:=100*(c-llv(l,30))/(hhv(h,30)-llv(l,30));
候鸟:=barslast(cross(30,aa))<2 and barslast(cross(aa,50))<2 and barslast(cross(dd,aa))<2 and aa>dd and dd>70 ;
候鸟888:=c>max(ma(c,5),ma(c,10)) and c>ma(c,30) and c>o and count(c>=o,10)>4 and count(c/ref(c,1)>1.097,120) and ma(c,30)>ma(c,60) and ma(c,60)>ma(c,120) and ma(c,120)>ma(c,250);
候鸟拐点买入:候鸟 and 候鸟888;

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