尽可能引用原始或接近原始史料,少用后期改编过的史料。此项原则应为每一个研究史学的人所熟知,但未必能遵守。研究中古史上古史,若想都用原始资料,固不可能,但也总当尽可能的利用早期纪录,即接近原料,或说第一二次改编的史料,不要用第三次四次或更多次改编的史料。但事实上很多人违反此项原则。就我所知,中国研究政制史的人不守此项原则的就极多。中古政治制度的原始史料现在仍保存了的固然极少;不得已,只得以正史为基本史料。正史所无,而可考见于 As far as possible, citing original or near-original historical data, and using less historical materials adapted from the later period. This principle should be known to everyone who studies history, but it may not be obeyed. To study the ancient history of ancient history, if you want to use raw materials, it is impossible. However, it is always better to use the early records, that is, to approach the raw materials, or the historical materials of the first two adaptations. Do not use the third time four times or More historical materials. However, many people actually violate this principle. As far as I know, many people in China who study the history of the political system do not keep this principle. The original historical data of the political system of the Middle Ages is still very rarely preserved; as a last resort, only historical history is the basic historical data. There is no history, but can be found in