Crown prosecutor Anna Longdill said he threatened to rape her unless she either posed naked for photographs or performed oral sex on him.
She was scared, upset and captive in the house so she complied with this demand while he filmed the act on a cellphone, Ms Longdill said.
"I didn't want to do it, I just wanted to leave, but I didn't have any choice," the girl told police.
Over the ensuing weeks the man sent her threatening text messages telling her that if she did not reply to him he would post the footage on the internet.
The man's lawyer, Ron Mansfield, argued the girl went to the house willingly and was never detained there, nor was she sexually violated.
The man did send her threatening text messages but this was because he had been frustrated that she would not commit the fraud as she had promised.
Mr Mansfield said the images he was referring to in these messages were of her drinking at a karaoke bar -- which her strict mother would have taken exception to -- and were not even taken by him.
The Crown case was entirely dependant on the girl's evidence, which was unreliable, given the inconsistencies between what she said in her police interview and what she said during the trial, Mr Mansfield said.
"If you (the jury) are fair and impartial you must have grave concerns regarding the complainant's account in light of (the accused's) evidence".
Justice Mark Woolford told the jury that, should they arrive at guilty verdicts, they needed to consider whether Feng was a principal offender or just a party to the crimes.
The jury of six men and six women will continue deliberating in the morning.
- NZPA
