English Original
During the Spring and Autumn Period (770-476 B.C.), a master craftsman named Gongshu Zi from the State of Lu, known as "Lu Ban," crafted a magpie from bamboo and wood.
He installed a mechanism inside it. When activated, the magpie could soar high like a real bird, flying continuously for three days and nights before landing.
Gongshu Zi was immensely proud of this ingenious creation.
When Mo Zi, the founder of Mohism, heard about it, he went to see Gongshu Zi immediately and said:
"As you know, an ordinary carpenter can quickly make a linchpin for a wheel using minimal wood. A cart fitted with linchpins on its axle can carry heavy loads up to 50 dan. Yet, you expended painstaking effort on this wooden magpie. Though beautiful and capable of flight, it cannot match the linchpin's practical value. A craftsman's work should benefit people's lives to earn praise for skill and cleverness. Otherwise, it risks being derided."
中文翻译
春秋时期（公元前770-476年），鲁国有一位能工巧匠公输子，人称“鲁班”。他用竹子和木头制作了一只喜鹊。
他在喜鹊内部安装了机关。一旦启动，这只喜鹊就能像真鸟一样高飞，连续飞行了三天三夜才降落。
公输子对自己这件杰作非常得意。
墨家学派的创始人墨子听闻此事后，立刻前去见公输子，并对他说：
“你知道，普通的木匠能用极少的木料，在很短的时间内做出一个车辖。装有车辖的车轴可以让车子承载重达五十石的货物。然而，你却费尽心血制作这只木喜鹊。它虽然精美且能飞，但在实用价值上却比不上车辖。工匠制作的东西应当有益于人们的生活，这样才能因其技艺和巧思而受到称赞。否则，难免会遭人嘲笑。”