@Tendar 3h
China lost the Amur/Primorye regions in the 19th century against imperial Russia. It is the only territory still under control by a foreign imperial power which formerly belonged to Qing-China.
The names of (current) Russian cities in Chinese are also interesting.
You might have never heard of cities called "Khaishenvai", "Boli" or "Shuangchenzi" as well as the island of "Quedao", because that are the official names according the Chinese Ministry of Natural Resources for Vladivostok, Khabarovsk, Ussuriysk and Sakhalin, "newly" introduced (as official by the Chinese Government).
