Bai Qi
According to the Shiji, in the year 257 BC, Qin started to besiege Handan, the capital of Zhao. Because Bai Qi was ill, the Qin king used another prominent general, Wang Ling (), who subsequently lost the battle. After about four months, when Bai Qi seemed to have recovered, the king asked him to return to his post as commander, but Bai Qi held a different opinion, he argued that Qin no longer had enough resources for such a long-range war, and the other states would soon attack Qin since Qin had been contrary to the negotiation. However, the king insisted on continuing the attack. Bai Qi refused the king's command, using his illness as an excuse. The king, therefore, had to use Wang He (), another prominent Qin general, instead of Bai Qi, as the commander.