《战国策·燕二·秦召燕王》
秦国在天下实施强暴，曾直言不讳地告诉楚国说： 蜀地的军队，驾快船沿水而行，凭借夏天盛涨的江水进入长江，五天就可到达郢都。
 秦之行暴于天下，正告楚曰： 蜀地之甲，轻舟浮于汶，乘夏水而下江，五日而至郢。
Qin enforced violence on the world. It once clearly told Chu: "Troops from Sichuan can ride fast boats down the river and take advantage of the rising water in summer to enter the Yangtze River, and they can reach Yingdu in five days."