How I apply a China Visa on Arrival at Haikou Airport?

Hi I am an Australian Passport holder and planning to go to Guangzhou from Syndey transiting at Haikou Airport at 4 am in the morning. As I am staying with my relatives so there is no hotel booking but I have a return ticket back to Sydney in 2 weeks. Can I apply a VOA at Haikou Airport?
Many thanks