《晋书·志·第八章》
又同时用古今十部历法推算检验《春秋》，从中可知，《三统历》最为粗疏。
又并考古今十历以验《春秋》，知《三统》之最疏也。
At the same time, the Annals were verified by using ten ancient and modern calendars to calculate. As a result, it was found that the Three Systems Calendar was the roughest.