The Chocha Ngacha language or Chochangachakha (Dzongkha: ཁྱོད་ཅ་ང་ཅ་ཁ་ Wylie: Khyod ca nga ca kha "'You' and 'I' language";[2] also called "Kursmad-kha", "Maphekha", "rTsamangpa'i kha", and "Tsagkaglingpa'i kha") or Tsamang is a Southern Tibetic language spoken by about 20,000 people in the Kurichu Valley of Lhuntse and Mongar Districts in eastern Bhutan.
][2] Under pressure to assimilate into the mainstream Dzongkha-speaking Ngalop culture, this proximity has resulted in significant loss of its particularly distinctive Kurichu linguistic substrate.
[1][4] Nicholas Tournadre writes: Among the eighteen Tibeto-Burman languages (henceforth TB) found in Bhutan, seven belong to the Tibetic group ... which was earlier called “Central Bodish” (see Tournadre, 2014).
These languages include Dzongkha རྫོང་ཁ, Chocha Ngacha ཁྱོ་ཅ་ང་ཅ་ཁ་, Lakha ལ་ཁ་, and Merak-Saktengkha མེ་རག་སག་ང་ཁ་, Layakha ལ་ཡ་ཁ, Durkha ȭར་ཁ་ and Trashigang Kham བཀྲ་ཤིས་Ȉང་ཁམས་ǰད་.
This proximity to CT makes it easy to transcribe most words using the Classical orthography.