Wow!!! Grade 4 has gotten very challenging. I wasn't sure if the answer was supposed to be general in nature or more detailed. You could write volumes on this question alone. I chose to answer the question simply ...
"Chinese culture includes ... the clothing styles, literature, music, art, architecture, traditions, values, language, religion, spirituality, legends and fables, food (rice and vegetables), sports (martial arts and such) of the people who call China home."
I bet if you went to an Olympic site, you could find something really good...
I love 4th grade, I used to be a teacher and it was my favorite grade to teach, 1st grade was the most difficult, but thats another story.
I love helping kids with their homework, but I really did not help you this time, did I?