a vast territory with a large population
Chinese idiom, Pinyin is Gu ǎ NGT ǔ zh ò NGM í n, which means vast land and many people. It's from Mencius with all his heart.
The origin of Idioms
"Mencius heart up" says: "the people, the gentleman desire, the joy does not exist
Idiom usage
It is unreasonable to say that there is no way to finance and economy in such a country with vast land and numerous people. Mao Zedong's "principles, methods and future against Japanese attack"
a vast territory with a large population
agreement is difficult if there are too many people - rén duō zuǐ zá
Water injection into suspended channel - xuán hé zhù shuǐ
take precautions against a possible danger - wǎng tū xǐ xīn