Stay in Shanghai for 3 days, do we need a visa?

We terminate our cruise in Shanghai and my husband & I will stay on for 3 days, we then fly to Cambodia. Do we need to get a visa for this short period.? I have had a previous visa when I went to Bejing but it is in an old passport. Would there be a record of this as I don't use that passport now. Also I have a NZ passport & my husband has an Australian one. Thanks