Lang is a Chinese character, and the pinyin is láng, làng. Reading láng basically refers to the appearance of the high gate, such as: Langque (High Gate Que); Pheasant (tall). Langzhong, Sichuan is a common place name with the word Langzhong.
Related sources:
Pheasant, the door is high. A good voice came from the door. -"Shuo Wen"
Outside the city, it is the country, and outside the country, it is the soil. -"tube, degree"
There are heavy pheasants in the cell. -"Zhuangzi, foreign things". Note: "Also called Lang."
One is Xianpa in Yuen Long, and the other is flawless jade. -A Dream of Red Mansions