Manchuria

geographical name

Man·​chu·​ria man-ˈchu̇r-ē-ə 

region of northeastern China south of the Amur River including Heilongjiang, Jilin, and Liaoning provinces and part of Inner Mongolia and bordering on Mongolia, Russia, and North Korea

Note: Manchuria was the original home of the Manchus.

Manchurian

man-ˈchu̇r-ē-ən 

adjective or noun