Although we're just learning English, it's also important to understand culture because culture and language are very much intertwined. To learn a language better, we must become part of the culture too!
Of course Chinese, French, and Korean aren't the only important cultures to know, but I'm hoping the image above will show you that every culture has its own differences and you should be aware when you travel abroad, meet new people, or do business.
In your culture, is it OK to eat before your host eats?