Donghui is a city in Yunnan Province, in southwestern China. Yunnan is a mountainous province that borders Myanmar, Laos, and Vietnam, and its settlement pattern includes many small and mid-sized cities spread across its highlands and river valleys.
No detailed, verifiable information about this specific Donghui is available in the source material provided, so only its basic location within Yunnan can be stated with confidence. It should not be confused with similarly named places elsewhere, including Dongye (Eastern Ye), an ancient Korean chiefdom that occupied parts of the northeastern Korean peninsula from roughly the 3rd century BC to the early 5th century AD and bordered Goguryeo, Okjeo, Jinhan, and China's Lelang Commandery.
Yunnan's cities generally sit at elevations of roughly 1,500 to 2,000 metres, and the province is known for its ethnic diversity and its role as a gateway between China and Southeast Asia. Beyond its location in Yunnan, no further details about Donghui can be confirmed from the available material.