What is the cheapest and safest way to send money back from Australia without being discovered by immigration?

So what if immigration finds out? . There is no limit. .

Remittances can be made through Western Union and Remittance Union, and Australian dollars can be remitted directly to RMB.

I have only used Western Union, that is, to remit money at the Western Union window, and then to find domestic people to withdraw money at the Western Union point in China. You can remit money then. If you have a domestic ABC card or postal savings card, you can remit it directly to your account.

Huilian should be similar.

Don't remit money from the bank, it's very slow, and you can only remit Australian dollars and US dollars. The handling fee is still expensive.