Definition of "Yanbian"

Korean is spoken by a sizable minority in the North-eastern provinces. Yet forty-six percent of all Koreans in China, 540,000 people, live in the Yanbian Korean Autonomous District along the Tumen river.

1975, “The National Minority Languages of China”, in Winfred P. Lehmann, editor, Language and Linguistics in the People's Republic of China‎, University of Texas Press, page 124

There are plenty of soldiers in the surrounding Yanbian Korean Autonomous Prefecture, the official Chinese name for the region, mounting guard along the nearby border with the DPRK.[...]Yanbian, Yanji apart, is one of the least densely populated regions of China outside the high plateau of Tibet and the deserts of Xinjiang.

2014, David Eimer, The Emperor Far Away: Travels at the Edge of China‎, Bloomsbury USA, page 254

China Earthquake Networks Center said Monday the magnitude 1.3 earthquake occurred in the evening in Hunchun. The city is in northeastern Jilin province’s Yanbian prefecture, known for its large ethnic Korean population, and borders North Korea and Russia.

2019 June 17, “China says suspected blast caused minor quake near N. Korea”, in AP News‎, archived from the original on 12 July 2022