I am studying abroad this summer. I was wondering what would be acceptable for a girl to wear?

I am going to be studying in Lanzhou during the summer. I know that the summers are not too hot, with temperatures around 20˚C. What is respectable for a college girl to wear around campus and the city?

Are shorts okay or should I focus on skirts? Should I be worried about being too formal? What kinds of shoes are okay? I will already be pretty tall compared to the population, so are shorter heels still okay?