Sichuan Province in the context of Mount Emei

32°54′N 101°42′E / 32.900°N 101.700°E / 32.900; 101.700

Ngawa or Aba town (Chinese: 阿坝镇; pinyin: Ābà Zhèn Standard Tibetan: Ngawa) is the seat of Ngawa (Aba) County, within the Ngawa (Aba) Tibetan and Qiang Autonomous Prefecture in northwestern Sichuan, China. It is located on the Tibetan Plateau at an elevation of 3,200 metres (10,500 ft). The city is about 75 km (47 mi) from Jigdril, 254 km from Barkham (Ma'erkang) and 157 km (98 mi) from Mewa (Hongyuan).

The Xiluodu Dam (simplified Chinese: 溪洛渡大坝; traditional Chinese: 溪洛渡大壩; pinyin: Xīluòdù Dàbà) is an arch dam on the Jinsha River, i.e. the upper course of the Yangtze in China. It is located near the town of Xiluodu in Yongshan County of Yunnan Province but the dam straddles into Leibo County of Sichuan Province on the opposite side of the river. The primary purpose of the dam is hydroelectric power generation and its power station has an installed capacity of 13,860 MW. Additionally, the dam provides for flood control, silt control and its regulated water releases are intended to improve navigation downstream. Construction on the dam and power station began in 2005 and the first generator was commissioned in 2013, the last in 2014. It is operated by China Yangtze Power and is currently the fourth-largest power station in the world, as well as the fifth tallest dam world-wide.

The Lisu people (Lisu: ꓡꓲ‐ꓢꓴ ꓫꓵꓽ; Burmese: လီဆူလူမျိုး, [lìsʰù]; Chinese: 傈僳族; pinyin: Lìsùzú; Thai: ลีสู่) are a Tibeto-Burman ethnic group who inhabit mountainous regions of Myanmar (Burma), southwest China, Thailand, and the Indian state of Arunachal Pradesh.

About 730,000 Lisu live in Lijiang, Baoshan, Nujiang, Dêqên, and Dehong prefectures in Yunnan Province and Sichuan Province, China. The Lisu form one of the 56 ethnic groups officially recognized by China. In Myanmar, the Lisu are recognized as one of 135 ethnic groups and an estimated population of 600,000. Lisu live in the north of the country; Kachin State (Putao, Myitkyina, Danai, Waingmaw, Bhamo), Shan State (Momeik, Namhsan, Lashio, Hopang, and Kokang), and southern Shan State (Namsang, Loilem, Mongton), and Sagaing Division (Katha and Khamti), Mandalay Division (Mogok and Pyin Oo Lwin). About 55,000 live in Thailand, where they are one of the six main hill tribes. They mainly inhabit remote mountainous areas.