half of the country, especially referring to the portion remaining after significant territory has fallen to enemies

to discuss or criticize important national or world matters, often with passion, idealism, or an air of authority

Jiangshan, a county-level city in Quzhou City, Zhejiang

the extensive landscape and territory of a country, often used to refer to one's homeland

It is easier to change mountains and rivers than to alter one's character; an idiom suggesting that one's fundamental nature or personality is very difficult to change.

Rivers and mountains are easy to change, but a person's character is much harder to change.