Where is the learning direction?

I started to learn C # by myself in my sophomore year, including his winform, web form to the current Asp.net MVC, as well as the framework and design pattern used for development. All things learned are related to C. Many people say they want to learn several languages, but I have never thought of learning other languages. It is because of the usage of the simple syntax. You can also learn its class libraries and various frameworks. Slowly, I feel that my knowledge is actually limited to. net. Would you like to ask the elders in the blog garden How many languages do you use? Can you develop projects in any language at any time? In this case, I think it is too difficult for me to learn.

Where is the learning direction?