Abstract: This article studies the experience of the Russian ukanju (escapees) captured by the Karun’s guards of the Qing frontiers in Xinjiang, Mongolia, and Heilongjiang from 1764 to 1780. Using a series of Manchu archives, and documents of the Russian Orthodox Church, the article illustrates how Russian ukanju who crossed the borders to come to China were sent to Beijing, and then were exiled to Fujian and Guangdong. Finally, some became the uksin (soldiers) of the garrisons of the Eight Banners in Fuzhou or Guangzhou, and others became Manchu uksin’ slaves. This unknown aspect of the history of Qing-Russian relations not only shows the implementation of frontier regulations after the signing of the Treaty of Nerchinsk and the Treaty of Kyakhta, but also reveals the characteristics of the Qing frontier rules during the late 18th Century.