Do Indian Nationals in Australia need a visa to HongKong for a conference?

I am an Indian national, living in Sydney, Australia wishing to go to Hong Kong for a conference, immediately followed by a visit to Shanghai, China for another conference. I want to know:
1. do I need 2 visas? one for Hong Kong, another for China? Do I need to apply to China Consulate only or both consulates?
2. Do I need a visa for Hong Kong at all, as it's listed that I can go there as a tourist for 14 days,

Plz. let me know. Thanks in anticipation