A bird startled by the mere¹ twang of a bow-string
　　During the time of the Warring States (475-221 BC)， there lived a well-known archer² named Geng Ying whose art in shooting was excelled by none at his time.
　　One day, as he was standing³ by the side of the King of Wei, a flock of swan geese were flying over. With confidence, Geng Ying said to the king, "The twang of my bow-string might bring down a bird." The King doubted much. Just then a solitary⁴ swan goose appeared, low and slow in its flight, sad and dolorous⁵ in its cry. Instantly Geng Ying bended his bow and forcibly pulled the bowstring. Twang! High up went he shrilling⁶ sound into the air and down fell the bird to the ground. The king admired with bewilderment. Gang Ying then explained: "The bird was flying low and slow, because it was already hurt; it was crying in a bitter tone, because it had lost its companions. Due to the fact that it was already hurt and sad at heart, the twang of my strong bow, that birds dreaded⁷ most, startled it. The shrilling sound made its heart beat fast, its wings weak, its balance uneven⁸. Thus it fell down just as commonly as a man drops his chop-sticks, at the thunder-stroke, at a dinner table." Henceforth comes the idiom "A bird startled by the mere twang of a bow-string", illustrating⁹ a case where a man who had been previously¹⁰ and repeatedly frightened became numb¹¹ and stupefied by a new thing of the same nature not knowing how to face the new situation.

　　惊弓之鸟
　　战国时期，有个杰出的弓箭手，叫做更赢。他的射箭本领在当时可称是举世无双。有一天，他和魏王并肩站着，天空中忽然飞过一群鸿雁。更赢很自信的对魏王说："我可以用弓声就把飞鸟给打下来。"魏王很怀疑。正在那是，一只孤雁很低很慢的飞过。鸣声凄惨。更赢见了，就张着弓，扣着弦，砰的一声，直入云宵。那孤雁果然应声落地。魏王惊叹之余，不明白这是怎么回事。更赢解释说："那孤雁飞得低且慢，因为它已经受过伤；它鸣叫的声音悲而哀，因为它离了群。身伤心碎，使它心跳加速，两翼无力，体重失去平衡，正如人们吃饭时，突然听见雷声，筷子落地的情况一样自然而平常。
　　后人根据上面的故事，做成了"惊弓之鸟"这个成语，形容先前多次受过惊吓的人，忽然遇到同样可怕的事物，就吓得魂飞魄散，惊惶失措，不知如何去应付新的环境。