This paper anyalizes envoys’ exchages between Khitan Dongjing and Goryeo emperors under the conditions of tribute-investiture system of Khitan and Goryeo Dynasty. It also seeks to reexamine the Dongjingshi which was considered to be sent by the emperors between Khitan and Goryeo and to find out the purpose and features
Dongjingshi was the envoy that was sent by Goryeo, and was used thirty-five times which means the second frequency among envoys.
Goryeo sent the Dongjingshi to Khitan eight times, and Khitan sent Goryeo envoys that was named with ‘回禮使(Huilishi)’ or ‘回謝使 (huixieshi) of which meaning was reponding to Goryeo. Dongjingshi was thought to be equally changed, because they used the ‘致書(zhishu)’ which was different from the diplomatic document beteen
The history of Dongjingshi implied the importance of Khitan Dongjing. At first, Khitan Dongjing had the role of controlling the remnants of the Balhae, but later it has changed the role into not only making relationship with Goryeo but also taking charge of the eastside of Khitan. So 東京留守(Dongjing-liushou) was filled with
Khitan people because it had administrative and military power of Dongjing, so especially people who has considerable authority in that area were in charge of it.
Dongjingshi was started in this background, and in the beginning it played an intemediary role between the Khitan and Goryeo courts.
Dongjing-liushou and the emperor of Goryeo made an amicable relationship through Dongjingshi. Particulary, private exchanges were shown throught it, and it was also played as the window of negotiation and the control tower of solving problems between the two. This history of Dongjingshi between the two was also shown in
the Jin Dynasty which stuck to the diplomatic institutions and Five-capital System of Khitan, so Dongjingshi in the Jin Dynasty was assumed to be the same as Khitan’s.