Yadong（Chomo/切馬；下亜東） (yatung)

　切馬（切马/切玛/che-mo）村は下亜東地区に属す．
─ Yadong, also known as Chomo in Tibet and Yatung in India. In 1893, Britain succeeded in obtaining a trading post at Yadong. Since then the British pronounced the village, Chomo, such as Chumbi that seem to be an origin of "Chumbi Valley".
　See a Chinese map below.
maps.blogtt.com/Map/30Xizang/14307.jpg
■亚东县：上亚东乡，下亚东乡，康布乡，堆那乡，吉如乡，帕里镇，下司马镇。