In many countries there are large fees for using ATMs that vary from bank to bank.
ATM fees with all Australian banks are already very high and include a percentage of the amount and a fixed fee.
Another thing that varies widely in some countries is how much cash you can withdraw in a single transaction.
I ran into this exact problem recently in both Laos and Vietnam. If you have to make two withdrawals to get enough cash to last a week or two you will have to pay (almost) double the fees.
Including the local, remote, and percentage fees can easily add up to the cost of one or night's accommodation in a developing country!
ANZ Bank has branches in Beijing, Guangzhou, and Shanghai. Those will probably have lower fees for ANZ ATM card users.
But many banks in one country have affiliations with banks in other countries which can include no extra fees for travelers using a card from their affiliate.
Also some banks just have lower fees or no fees and higher withdrawal limits.
Does ANZ have such a deal with a Chinese bank? If not, which Chinese bank has most favourable ATM fees and withdrawal limits for people using overseas cards?