一根根巨大的滾木從黃河的上游漂流下來，跟着一塊下來的還有許多似乎是木板一樣的東西。管亥等人一看就知道，是自家這邊搭建的浮橋被滾木給撞毀了。
看到這一幕，無論是管亥又或者是其他人，臉色都忍不住一變，只有張郃卻是哈哈大笑，顯得很得意的樣子。
這次張郃在平原獨當一面，袁紹怎麼可能放心的了？所以臨行前特意安排了一個謀士在張郃的身邊。這個謀士就是袁紹和曹操兩個人的髮小，許攸。
論智謀，其實許攸還是相當出眾的，除了為人貪婪了一些之外，也稱得上是一個比較合格的謀士。這次袁紹派他來輔佐張郃，也算是一個比較合理的安排了。
而許攸在抵達平原之後，第一件事就是讓人在黃河的上游設立了許多滾木，只需要一聲號令。數以百計的滾木就會順着黃色而下，
嗯嗯，不好意思，後面的一定儘快補上！！！
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