| Native Name: | Chinese: 下亚东乡 Tibetan: གྲོ་མོ་སྨད་ཆུས |
| Subdivision Name3: | Yadong County |
| Population As Of: | 2018 |
| Population Total: | 897 |
| Area Total Km2: | 204.7 |
| Other Name: | Dromo Mechü |
| Pushpin Map: | China#Tibet |
| Coordinates: | 27.4294°N 88.9275°W |
| Subdivision Name2: | Shigatse |
| Xiayadong Township | |
| Subdivision Name1: | Tibet |
| Subdivision Name: | China |
| Subdivision Type3: | County |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Type1: | Autonomous region |
| Subdivision Type: | Country |
| Settlement Type: | Township |
| Population Density Km2: | auto |
Xiayadong Township, known in Tibetan as Dromo Mechü is a township in the Chumbi Valley in Yadong County, Shigatse, in the Tibet Autonomous Region of China.[1] Much of the township's area comprises disputed territory: the township spans an area of 204.7km2, excluding disputed territory,[2] and 650.88km2 including it.[3] Xiayadong Township's population totaled 897 as of 2018.
The township straddles the disputed Bhutan-China border, near the sites of the 2017 China-India border standoff.
The township's center is the village of Rinchengang, on the bank of the Amo Chu valley, which also receives the track from Sikkim's Jelep La pass. In addition to Rinchengang, the township also includes the Geling, Chema and Pipitang villages upstream along the Amo Chu, and Assam-Rotsa (or Asamthang) downstream.
In addition, the Township includes large territories in Bhutan that China claims. These include the Doklam region, Lulin and Charitang. These claims however do not find historical support in the testimony of British Indian officials.
As of 2018, Xiayadong Township has a population of 897. The township had a population of 1,097 as of 2010.
Xiayadong administers two administrative villages: Rinchengang and Chema.[4]