Entering China on a cruise ship. What type of China visa is needed if the ship will stop in Shanghai, Dalian and Beijing on different days?

I am and Australian citizen, currently in Vietnam and I am trying to arrange a visa for China as I will go to China on a cruise boat in October. The boat stops in Shanghai for one day, then sails the next day, then the day after stops in Dalian for the day, and the next day stops in Beijing. Do I need a single entry or multiple entry visa for this?