长平之战
One famous anecdote is that after the Battle of Changping in 260 BC, in which, according to the historian Sima Qian, 450,000 soldiers of the state of Zhao were killed by the Qin army, King Jian was advised: "Zhao is a hedge that protects Qi... just as the lips protect the teeth. When the lips are gone, the teeth become cold...Go to the aid of Zhao!" However, the king did nothing; during his reign he tried to stay out of wars, as the future First Emperor Qin Shihuang attacked all the states around him.