Thanks, Cosmin, for your comment!

Your question is quite difficult because it depends on a lot of things. Both languages can help you with work opportunities since Chinese-speaking countries (China, Taiwan, Singapore, etc.) and South Korea keep growing economically.

Choose the one you are most interested in. The more you like a language, the longer you’ll be able to keep learning. Any language learned at a high level will give more opportunities. They’ll be in different places but they’ll exist no matter what language you choose to learn.

Good luck!