AFP signs agreements with Chinese Ministry of Public Security, page-2

media release, Australian Federal Police return $4 mil, fraud money back to China.

There is a history of cooperation between chinese and australian police..

http://china.embassy.gov.au/bjng/mrafp.html

personally, i think with the exception of human right cases involving politics, and movement for freedom of speech.. all other economic fugitive should be returned to China to face trial. Similarly, fraudster like Jiameng should be brought from China to Australia to face trial.