Russia-China border town

In a world of scarce resources, Russia's Far East is unusual, with an immense stretch of relatively unused land and resources. The prime location on the Pacific Rim near some of the world's top export economies Japan, South Korea, and China gives the Russian Far East even more potential.

A significant chunk of eastern Russia used to be part of China. On the map below you can see that today the northeast corner of China, Heilongjang province, just over the border from Russia, has 38 million people including its capital Harbin pop. 3.5 million. The Russian side, however, looks nearly empty on the map by comparison. Many Chinese people today are moving across into Russia to sell goods and to work on farms.

China border town has booming businesses - CNN
https://www.youtube.com/watch?v=ZV8BS481yF0