I want to travel to Korea, but what if I can't speak that language? Is there any good way?

Travel with a group. If it's a self-help tour, bring a Korean tourist language manual, which contains some simple and commonly used sentences. It doesn't matter if you don't understand. Just buy them a bilingual one. If you want to go shopping, I recommend you to Myeongdong and Dongdaemun in Seoul, South Korea, where the clerk can speak Chinese. You can go to Hanjiang River, Lotte Amusement Park, Everland and Ruyi Island. Jeju Island is better, and some travel classics are under Baidu.