Why don't Koreans eat mutton?

It may be because Koreans are far away from grasslands, so they eat less mutton. So they came to China to eat mutton kebabs, just as mutton kebabs became popular in China after entering the mainland from Xinjiang in the 1980s, and they soon became popular among Koreans. Generally, Koreans must eat mutton kebabs before returning to China, because they can't eat mutton kebabs in Korea.