What area code should I add to call from Australia to the mainland?

00 1 1 (international) 86 (China area code) and then you add the area code of the phone you want to call, and the area code is added to the landline, and the mobile phone directly adds the mobile phone number to 00 1 186.

The information is: +86 mobile phone number (from Australia to China)

+6 1 mobile phone number (within Australia)

*6 1 is the area code of Australia. Delete the 0 before the mobile phone number. For example, the telephone number is 04226 19699, which means +6 1426 19699. Remember, you must take that plus sign.