chinese tourist visa application in nepal

hey folks, am looking to go to china in a few weeks, and am swimming through the application here in nepal… do i definitely need a purchased roundtrip ticket to obtain a tourist type? can the itinerary be rough, or do i really need to obtain reservations for my whole time there? and lastly, it seems i need a bank statement- is that true? (difficult for me here in nepal) many thanks for your replies ; )