Geng Lei was a famous archer of the state of Wei. One day while he was on an excursion outside the city with the King of Wei, he saw a bird circling in the sky. The King asked him to down the goose with an arrow. He answered: I don't have to use an arrow. I can just make the bird fall down from the sky with my arch. Do you have that marvellous skill? asked the King. Presently they saw the wild goose flying from the east. Geng Ying twanged the string of his bow and indeed the wild goose at once dropped to the ground in front of them. You're really a wonderful archer, said the King with approval. Geng Lei said, This is a wounded wild goose. From its desolate cry and tired flight you can see its wound has not yet healed. When it heard the twang of my bow-string, it thought it was again hit by an arrow and fell from the sky.

Chinese Proverb