This collection is the third volume of the documentary series "Russian-Chinese Relations in the 18th Century." He continues a documentary study of the history of the embassy of Count S.L. Vladislavich-Raguzinsky to the Qing Empire (1727-1729), begun in the second volume (1725-1727) of this series. The published documents touch upon the most important issues of Russian-Chinese relations of the 18th century related to the preparation and conclusion of the Buriisky (August 20, 1727) and Kyakhtinsky (October 21, 1727) treaties.