Su Zhe
During Song dynasty (960–1279), Sichuanese were able to protect themselves from Tibetan attacks with the help of central government. Sichuan also saw cultural revival like great poets Su Xun (), Su Shi, and Su Zhe. Although paper currency was known in the Tang dynasty, in 1023 AD, the first true paper money in human history, termed "jiaozi" (), was issued in Chengdu.