To add to this, if you do not already have knowledge of the language, a major in that language and literature can require a rather high volume of course work (even more so for a language like Chinese that is among the more difficult ones for English users to learn), leaving less schedule space for additional majors, minors, or elective courses.
Now, if you already have substantial skill in Chinese and/or German so that you can skip the lower level language courses, doing the intended study in those languages and literatures as well as economics may be more doable.
But also note that if you want to go on to PhD study in economics, you probably also want to add some additional advanced math and statistics courses like real analysis and probability theory.