Important components of Chinese culture include literature, music, visual arts, martial arts, cuisine, religion etc.
------------From Wikipedia

no, it just about Festival,for example Spring Festival,introduce it or Dragon boat Festival

Oh, I see. You just want to focus on festivals and customs. Well then, just pick some major festivals and talk about them in turn. Say something like how and why we celebrate them and what are the meaning of them.

Sorry, meanings. Good luck with your presentation.