15-11-19 One day, a man named He Shi of the State of Chu got a piece of uncarved jade in a hill. He quickly went to present it to King Li of the State of Chu. King Li asked a jade craftsman to appraise it. The jade craftsman said: This is a piece of ordinary...

15-04-23 During the Spring and Autumn Period (770-476B.C), a skillful craftsman named Gongshu Zi in the State of Lu, Known to people as Lu Ban, made a magpie with bamboo and wood. A machine was installed in this magpie which, when started, could fly high lik...