We would like to exit the airport in Shen Zen to look around and do some shopping.

We are 3 sisters all Australian passport holders flying from Sydney to South India and then Hanoi, Vietnam for a few days. From Hanoi we fly back to Sydney with a 23.55 hour stop in Shen Zen. We would love to exit the airport in Shen Zen for some shopping and sightseeing. We permanently reside in Australia, have more than 3 months on our passports, and have our onward air tickets for Sydney. Will we be able to get a temporary entry permit in Shen Zen if we fill in Arrival/departure card?