Biru County (Tibetan: འབྲི་རུ་རྫོང་།; Chinese: 比如县) is the most populated county within Nagqu of the Tibet Autonomous Region, China. The name means "female yak". Either of the following pronunciations can be considered correct in Standard Tibetan: [bìru] ~ [pìru] (conventionally written Biru in English) or [ɖìru] ~ [ʈìru] (conventionally Driru).
Geography
Biru lies in the southwest part of the former province of Kham. To its east is Chamdo and to its west Nagchu. Biru is located on the Gyalmo Ngulchu River (upper part of Salween River). Diru is bordered by Sog County to the northwest and the extreme east of Banbar County་, is also surrounded by Lhari County to the south, and extreme north to the Nagchu county.