一剑之任

Explanation: Refers to the power of one sword. That combat soldiers, still made a brave person. Also means alone as a daunting task. 　　Source: "Wei Liao Zi Wu proposed" temporary difficulties casuistry, Huibing that edge, this will do also; sword of office, non will do also. "" Zhan Qi Policy 6, "the Duke has the world toward nobility, CAO of any child with his sword, robbed Huan bit above the altar." 　　Examples: Qin greedy I bribes, and believe me speech, then ~, but when millions of teachers. ★ "Yan Dan Zi" volume