it was not until the 1680s that the last of the eastern Buryat lands were forced to participate in the yasak system. In 1666, the fort of Udinskoye was founded. This area later became known as Verkhneudinsk - in 1934 it was renamed Ulan-Ude, the present-day capital of Buryatia.

From 1727, the town of Kyakhta served as the border crossing for the Kyakhta trade between Russia and China. Kyakhta's founder, the Serb Sava Vladislavich,