ists ▁Category : T our ▁de ▁France ▁cycl ists ▁Category : Place ▁of ▁birth ▁missing ▁( l iving ▁people ) <0x0A> </s> ▁Yang ping gu an ▁() ▁is ▁a ▁town ▁in ▁central ▁N ing qi ang ▁County , ▁in ▁south western ▁Sh a an xi ▁province , ▁China . ▁The ▁town ▁has ▁an ▁area ▁of ▁, ▁in ▁which ▁there ▁are ▁ 1 ▁resident ial ▁community ▁( 社 区 ) ▁and ▁ 2 0 ▁villages ▁holding ▁a ▁total ▁population ▁of ▁ 2 6 , 0 0 0 . ▁ ▁The ▁town ▁is ▁located ▁ ▁from ▁the ▁county ▁seat ▁and ▁is ▁near ▁the ▁tr ise ction ▁point ▁of ▁Sh a an xi , ▁S ich uan ▁and ▁G ans u , ▁in ▁the ▁upper ▁J ial ing ▁River ▁Valley . ▁The ▁town ▁is ▁named ▁after ▁the ▁pass ▁between ▁the ▁Q in ▁Mountains ▁to ▁the ▁north ▁and ▁the ▁D aba ▁Mountains ▁to ▁the ▁south , ▁which ▁has ▁tradition ally ▁been ▁the ▁main ▁entry ▁point ▁into ▁the ▁S ich uan ▁Bas in ▁from ▁the ▁north . ▁ ▁The ▁ancient ▁S ich uan ▁Tra il ▁passed ▁through ▁the ▁town . ▁ ▁The ▁Ba o ji – Ch eng du ▁and ▁Yang ping gu an – An k ang ▁Rail ways ▁intersect ▁at ▁Yang ping gu an . ▁ ▁History ▁During ▁the ▁Three ▁Kingdom s ▁period , ▁a ▁number ▁of ▁military ▁engag ements ▁were ▁w aged ▁in ▁and ▁around ▁Yang ping gu an , ▁including ▁C ao ▁C ao ' s ▁con quest ▁of ▁Z hang ▁Lu ▁in ▁the