With the help of Qin prince, ChongEr returned to his vassal state later. Several years later, a war between Chu and Jin broke out. When Chu and Jin meet in ChengPu(城濮), ChongEr ordered his army go back for 30 miles.РMeanwhile, there was a phenomenon in culture which was called contention of a hundred schools of thought. The schools contending mainly were Confucianism (儒家), Taoism(道家), Mohism(墨家), Yin-yang School (阴阳家), the Military Strategists(兵家), the Legalists(法家) and the Logicians(名家)РFighting for many years, in 221 BC, Qin prince YingZheng united China and established the first centralized feudal autocratic dynasty in Chinese history eventually.РMeasuresРbuilt the great wall Рunified vehiclesРunified characters Рfired all the books of ConfucianismРkilled many schoolars of Confucianism