Kite-flying is an age-old tradition in China. Its history can be traced back to the Spring and Autumn Period (770-476 BC) and the Warring States Period (475-221 BC) when Mozi and Lu Ban, according to historical records, made a wooden kite respectively. Famous kite-makers of the Qin-Han period (221 BC-AD 25) included Han Xin and Zhang Liang. Since then. accounts of kite-flying can be found in many pre-Tang annals such as the History of Southern Dynasties and the New History of Tang; mostly kites were used for military purposes, either carrying messages or exerting a deterrent effect on the enemy forces.