Gao had applied to Westpac for a $100,000 overdraft for his struggling BP petrol station but the bank accidentally transferred a $10m overdraft in to his account.
When he realised the error he allegedly skipped the country.
Hurring, and the mother of his child, followed days later.
Gao is accused of transferring almost $6.8 million of Westpac's money into several accounts before fleeing overseas.
About $3.7m is still missing.
The couple's disappearance sparked an international manhunt involving Interpol and other overseas agencies.
Gao was arrested in Hong Kong last September and was returned to New Zealand just before Christmas. He did not oppose being extradited and was remanded in custody.
Hurring, 32, was arrested when she re-entered New Zealand earlier last year. She faces trial this month.
