Fighting a War on Paper

Reading level: Intermediate

Zhao Kuo could recite every military classic and win any argument about strategy — but he had never led an army. At Changping his theories met Bai Qi, and Zhao paid for it. A graded retelling with notes on the sources and on the idiom’s “paper”.

战国后期，赵国名将赵奢在阏与之战中大败秦军，因功被封为马服君，是当时最出色的将领之一。

他的儿子赵括从小熟读兵书，谈起战略战术来头头是道，连父亲也辩不过他。

可是赵奢并不高兴。他说，打仗是生死攸关的大事，赵括却说得太轻松；将来赵国如果让他领兵，断送赵军的必定是他。

公元前262年，秦赵两国为了争夺上党爆发大战。老将廉颇在长平修筑营垒，坚守不战，秦军攻了很久也攻不下来。

秦国于是使用反间计，派人到赵国散布消息：秦军最怕的只有赵括，廉颇容易对付，而且快要投降了。

赵王信以为真，决定换将。蔺相如带病劝阻，说赵括只会读死书，不懂随机应变；赵括的母亲也上书，请求不要让儿子领兵。赵王都没有听。

公元前260年，赵括到了长平，马上撤换军官、改变军令，率军主动出击。秦将白起假装败退，引诱赵军深入，然后用奇兵切断了赵军的后路和粮道。

赵军被围四十六天，粮尽援绝。赵括突围时中箭身亡，据《史记》记载，四十多万赵军投降后被活埋。赵国从此一蹶不振，“纸上谈兵”也成了空谈理论、脱离实际的代名词。

Sources

Records of the Grand Historian (史记 · 廉颇蔺相如列传), “Biographies of Lian Po and Lin Xiangru”, by Sima Qian, c. 91 BC — Principal source for Zhao Kuo, his father’s warning, the change of command at Changping, and the outcome; a public-domain classical text.
Records of the Grand Historian (史记 · 白起王翦列传), “Biographies of Bai Qi and Wang Jian”, by Sima Qian — Bai Qi’s side of the battle: his secret appointment, the encirclement at Changping, and the burial of the surrendered Zhao troops; public domain.

History and legend

The Battle of Changping (262–260 BC), the replacement of the veteran Lian Po by Zhao Kuo, and the catastrophe that followed are recorded in Sima Qian’s Records of the Grand Historian, written more than a century later, so its speeches and scene-setting are literary reconstruction rather than stenography. The figure of more than 400,000 Zhao soldiers buried alive also comes from the Shiji, and modern historians debate whether it is literal or exaggerated — some argue the total includes camp followers, others that the numbers are rhetorical. The four-character idiom 纸上谈兵 is a much later summary of the story: no such phrase appears in the Shiji, and “paper” is an anachronism, since in the Warring States period people wrote on bamboo and wooden slips. The Chinese retelling and English translation on this page are our own.