L1 users: 1,500,000 (2000 census). 35,000 in Jingxi and Napo counties. Total users in all countries: 1,840,000.
Guangxi Zhuang Autonomous Region: Chongzuo, Daxin, Jingxi, Longzhou, Ningming, Pingxiang, and Tiandeng counties; Yunnan province: Funing county, a few villages.
6a (Vigorous). Language of recognized nationality: Zhuang.
Han (Hanzi, Kanji, Hanja) script [Hani], dating from Han dynasty, mainly used in non-official domains, gaining popularity.
The language is named for Zuojiang river that runs through this area, from northern Viet Nam into Longzhou, Chongzuo, and Fusui counties. Traditional religion, Buddhist, Daoist.