Tourist Visa for visiting China

Hi, I'm from Brazil and I'm in USA with a Tourist type one (B-1 B-2). I arrived here in USA in May 20th. I'm studying English in a ESL School accord with the rules of USA.
I woul like to visit China as a tourist (Beijing, Shanghai, Shenzhen, Macao, Hong Kong...). Here in USA I'm sharing a house, renting just a bedroom. How can I apply for a Chinese L type in this situation? What documents should I provide as a prove of residence?