The tradition of the prime minister "concurrently cultivating the history of the country" began in ( ).

The tradition of the prime minister's "concurrent revision of state history" began in (Tang Dynasty).

The term "concurrent revision of state history" is a different name for historians from the term "supervisor of revision of state history". The word "兼" means "part-time", while the word "监" means "supervise" in "supervise the revision of state history"; The difference in the words used also indicates that they should be two different names of historians, and their status and duties in the Historical Museum are also different. In addition, "concurrently repair the state history" is the Tang dynasty history hall unique name of the historian; and "supervise the repair of state history" since the Northern Qi formally produced, the subsequent generations of the history hall have this position, and the duties are more or less the same.

Part-time revision of the state history is second only to the supervisor of the state history of the history of the state history of the personal pen to write and repair the state history of the historian, it and the history of the museum of other historians, the same, mostly by the officials in the dynasty at the same time, but the difference is that the higher the rank of the court official, the more it is in the history of the museum of the higher position. Therefore, the official rank of the state history should be lower than that of the prime minister and higher than that of the other historians, such as the state history, the history of the compilation of the history hall, the history of the direct history of the hall judge the rank of the historians of the court.

In the Tang Dynasty, there was such a phenomenon that some of the part-time state historians, although they had been exempted from the court for other things, were deported to other places, but because of their talent in repairing the history, they were still not relieved of their duties as part-time state historians, so as to continue to complete their work of repairing the history in the places where they had been exiled. Zhang said that he was deported, but he was still in charge of compiling the state history with the position of repairing the state history is one of the examples. This is a side note, the Tang Dynasty, the part-time revision of the state history of a position must be sought in the court officials have real talent, have the long history of the part-time appointment.