The Treaty of Nerchinsk was signed in 1689 between the Russian Empire and the Qing Dynasty of China. It marked the first formal agreement between the two powers, establishing borders along the Amur River and regulating trade. This treaty helped to stabilize relations and reduce conflicts in the region. The treaty was significant as it recognized the sovereignty of both nations over their respective territories. It also allowed for peaceful trade and diplomatic exchanges, laying the groundwork for future interactions between Russia and China. The Treaty of Nerchinsk is considered a key moment in the history of Sino-Russian relations.