g　Yi。

〃Our　minister　is　truly　wonderful。　The　battle　goes　just　as　he　foretold；〃　cried　Zhang　Yi。　〃He　will　surely　send　help　now；　and　we　will　fight　to　the　death。〃

Thereupon　the　Shu　force　were　divided　into　two　parties。　Wang　Ping　led　one　army　to　hold　up　Zhang　He　and　Dai　Ling；　Zhang　Yi　led　the　other　division　to　oppose　Sima　Yi。　On　both　sides　the　fighting　was　keen　and　continued　all　the　day。

From　their　station　on　a　hill；　Jiang　Wei　and　Liao　Hua　watched　the　battle。　They　saw　that　the　Wei　force　was　very　strong　and　their　side　was　in　danger　and　slowly　giving　way。

〃Now　surely　is　the　moment　to　open　the　bag；〃　said　Jiang　Wei。

So　the　bag　was　opened；　and　they　read　the　letter。　It　said：

〃If　Sima　Yi　es　and　Wang　Ping　and　Zhang　Yi　seem　hard　pressed；　you　are　to　divide　forces　and　go　off　to　attack　Sima　Yi's　camp；　which　will　cause　him　to　retire；　and　then　you　can　attack　him　as　his　army　is　in　disorder。　The　actual　capture　of　the　camp　is　not　of　great　moment。〃

So　Jiang　Wei　and　Liao　Hua　divided　the　force　and　started　for　the　enemy's　camp。

Now　Sima　Yi　had　really　feared　that　he　would　fall　victim　to　some　ruse　of　Zhuge　Liang；　so　he　had　arranged　for　messengers　and　news　to　meet　him　at　intervals　along　the　road。

Sima　Yi　was　pressing　his　troops　to　fight　when　a　messenger　galloped　up　to　report：　〃The　soldiers　of　Shu　are　making　for　the　main　camp　by　two　directions。〃

Sima　Yi　was　frightened　and　changed　color。　He　turned　on　his　generals；　saying；　〃I　knew　Zhuge　Liang　would　plan　some　trick；　but　you　did　not　believe　me。　You　forced　me　to　pursue；　and　now　the　whole　scheme　has　gone　astray。〃

Thereupon　he　gathered　in　his　army　and　turned　to　retire。　The　troops　went　hurriedly　and　got　into　disorder。　Zhang　Yi　came　up　behind；　causing　huge　damage　to　the　Wei　army。　Zhan