Where can I get a visa for Hulunbeier hukou to travel to Korea?

Inner Mongolia is under the jurisdiction of the Embassy of the Republic of Korea in China. You can find a travel agency to handle it.

South Korea has nine consulates in China. Before submitting your visa application, you need to know which consulate your province belongs to. These nine consulates are:

Embassy of the Republic of Korea in China (Beijing), Consulate General of the Republic of Korea in Shanghai, Consulate General of the Republic of Korea in Guangzhou, Consulate General of the Republic of Korea in Qingdao, Consulate General of the Republic of Korea in Shenyang, Consulate General of the Republic of Korea in Chengdu, Consulate General of the Republic of Korea in Wuhan, Consulate General of the Republic of Korea in Xi and Consulate General of the Republic of Korea in Hong Kong.

You can learn more about visa/a/93-214.html.