Can Yanji people speak Korean?

That's not true. Yanji City is located in the east of Jilin Province, where Chinese, Northeast Dialect and Korean are widely spoken.

Yanji is the capital of Yanbian Korean Autonomous Prefecture, which has jurisdiction over 6 streets and 4 towns.

Streets: Henan Street (), Gong Jian Street (), Xinxing Street (), Gong Yuan Street (), Chaoyang Street () and Beishan Street ().

Towns: Yilan Town (), Sandaowan Town (), Xiaoying Town () and Chaoyangchuan Town ().

Extended data

Korean is the official language of North Korea, and Yanbian Korean Autonomous Prefecture and Changbai Korean Autonomous County in China also use Korean as their mother tongue, and commonly use Chinese and Chinese characters.

Korean Chinese characters are not only from Japan, but also from China and Viet Nam, and quite a few of them have been absorbed from Japanese in modern times. Most of these words are used to express modern things or concepts, such as "? (society) ""? (democracy) "

Baidu encyclopedia-Yanji

Baidu Encyclopedia-Korean