Treaty of Peking
First, to confirm the Treaty of Aigun (1858); second, the originally jointly-administrated boundary territory covering some 400,000 sq. km, east to the Ussuri River, including Sakhalin Island, was to be transferred to Russia; and third, the original Chinese internal lake Zaysan and Te Muer were to be set as the Sino-Russian western border.
In this way, Russian occupied a bulk of land in the east over Lake Balkhash and also furnished a theoretical basis for the further misappropriation of the eastern and southern part of the lake. By the Second Opium War, the Russians had looted more than 1 million sq. km of Chinese territory.