《宋书·志·卷十一》
我认为班固的《律历志》对以前的事情已讲得较为详细，自从杨伟改历编制了《景初历》后，在《魏书》中却没有记述。
窃以班氏《律历》，前事已详，自杨伟改创《景初》，而《魏书》阙志。
I think that Ban Gu's "Treatise on Laws and Calendars" already provides a detailed account of the past, but since Yang Wei changed the calendar and drew up the "Jingchu Calendar", it has not been recorded in the "History of the Wei Dynasty".