《晋书·志·第六章》
汉朝刚刚兴起，丞相张苍便开始考察音律，但未能审定完备。
汉室初兴，丞相张苍首言律，未能审备。
In the early days of the Han Dynasty, Prime Minister Zhang Cang began to examine the musical scales, but was unable to confirm their completeness.