The kite first appeared in the wars of the Spring and Autumn Period (770 BC - 476 BC). According to historical records, the famous leader Mo Zi spent three years building a wooden kite which was unsuccessful after one day's flight. One book noted that the master carpenter Lu Ban also made some which were flown high to spy on the condition of the enemy. The technology advanced further during the famous historical Chu-Han War of 203 - 202 BC. The general of the Han troops Zhang Liang ordered his soldiers to fly kites in the heavy fog nearby the Chu troops led by Xiang Yu. Children sitting in the huge kites played songs of Chu (the present Hubei Province) on flutes. Hearing the melodies, the Chu soldiers started to miss their homes and scattered