Item location + postage rate calculation error message

[limitlessmindsupplements]

Hi,

I have a some items that i am wanting to sell from China. I am based in Australia. I am having some difficulties finalising my listing due to this error with domestic postage:

"We're unable to calculate your postage cost based on your current item location. Please enter a valid item location which includes the City, postcode and Country.If your item location is not within the US, please select flat rate postage."

Has any an idea about what to do here. The item location is in Shanghai, China.

Many thanks