Which one is more useful and most worth learning?
Chinese, Japanese or Russian - which one is more useful?
Depends on what you want.
If you want to be understood by a lot of Earth's population: chose Chinese.
If you want to be understood on a lot of Earth's surface: chose Russian.
And if you want to understand a lot of non-English porn: chose Japanese.
Japanese, of course.
If you want to be understood by a lot of Earth's population: chose Chinese.
If you want to be understood on a lot of Earth's surface: chose Russian.
And if you want to understand a lot of non-English porn: chose Japanese.
Japanese, of course.