这是一个复合型选股指标，用于识别潜在买入信号。它结合了三种技术条件：
第一部分基于价格均线差值，当快线上穿慢线且满足特定阈值条件时触发信号，这些条件包括超卖状态或量价配合。
第二部分计算了20个不同周期的RSI指标，并分为短期和中期两组平均值。当短期RSI均线上穿中期RSI均线时，产生第二个信号条件。
第三部分是“四线合一”形态，要求开盘价同时低于四条均线，而收盘价同时高于这四条均线，形成强烈的阳线突破形态。
指标将以上三个技术条件用“或”逻辑连接，满足任一条件即可产生选股信号，综合了趋势、动量和均线突破多种分析方法。
VAR1:=(CLOSE*2+HIGH+LOW)/4;
SK:=EMA(VAR1,13)-EMA(VAR1,73);
SD:=EMA(SK,2);
(CROSS(SK,SD) AND SK<-0.04 AND (C-REF(C,1))/REF(C,1)>=0.03) OR (CROSS(SK,SD)
AND SK<=-0.14) OR (CROSS(SK,SD) AND SK<=0.05 AND (V/MA(V,5)>2 OR C/REF(C,1)>0.035));
LC:=REF(C,1);
RSI1:=SMA(MAX(C-LC,0),2,1)/SMA(ABS(C-LC),2,1)*100;
RSI2:=SMA(MAX(C-LC,0),3,1)/SMA(ABS(C-LC),3,1)*100;
RSI3:=SMA(MAX(C-LC,0),4,1)/SMA(ABS(C-LC),4,1)*100;
RSI4:=SMA(MAX(C-LC,0),5,1)/SMA(ABS(C-LC),5,1)*100;
RSI5:=SMA(MAX(C-LC,0),6,1)/SMA(ABS(C-LC),6,1)*100;
RSI6:=SMA(MAX(C-LC,0),7,1)/SMA(ABS(C-LC),7,1)*100;
RSI7:=SMA(MAX(C-LC,0),8,1)/SMA(ABS(C-LC),8,1)*100;
RSI8:=SMA(MAX(C-LC,0),9,1)/SMA(ABS(C-LC),9,1)*100;
RSI9:=SMA(MAX(C-LC,0),10,1)/SMA(ABS(C-LC),10,1)*100;
RSI10:=SMA(MAX(C-LC,0),11,1)/SMA(ABS(C-LC),11,1)*100;
RSI11:=SMA(MAX(C-LC,0),12,1)/SMA(ABS(C-LC),12,1)*100;
RSI12:=SMA(MAX(C-LC,0),13,1)/SMA(ABS(C-LC),13,1)*100;
RSI13:=SMA(MAX(C-LC,0),14,1)/SMA(ABS(C-LC),14,1)*100;
RSI14:=SMA(MAX(C-LC,0),15,1)/SMA(ABS(C-LC),15,1)*100;
RSI15:=SMA(MAX(C-LC,0),16,1)/SMA(ABS(C-LC),16,1)*100;
RSI16:=SMA(MAX(C-LC,0),17,1)/SMA(ABS(C-LC),17,1)*100;
RSI17:=SMA(MAX(C-LC,0),18,1)/SMA(ABS(C-LC),18,1)*100;
RSI18:=SMA(MAX(C-LC,0),19,1)/SMA(ABS(C-LC),19,1)*100;
RSI19:=SMA(MAX(C-LC,0),20,1)/SMA(ABS(C-LC),20,1)*100;
RSI21:=SMA(MAX(C-LC,0),21,1)/SMA(ABS(C-LC),21,1)*100;
短线RSI:=(RSI1+RSI2+RSI3+RSI4+RSI5)/5;
中线RSI:=(RSI6+ RSI7+ RSI8+ RSI9+ RSI10+ RSI11+ RSI12+ RSI13+ RSI14+ RSI15+ RSI16+ RSI17+ RSI18+ RSI19+ RSI21)/15;
A:=CROSS(短线RSI,中线RSI);
四线合一:O<MA(C,5) AND O<MA(C,10) AND O<MA(C,20) AND O<MA(C,30) AND C>MA(C,5)
AND C>MA(C,10) AND C>MA(C,20) AND C>MA(C,30);
