A MAN on trial for the murder of an air hostess yesterday denied he had told his co-defendant and one-time girlfriend what she should say regarding the case. Patrick David Wong said he was aware Kitty Yu Mo-ling had in her cautioned statement to the police ''put all the blame on me''. Last week, Wong said he found out after filing his appeal against his earlier conviction that Yu had said in an affidavit he had nothing to do with the killing. Wong, 36, and Yu, 30, have denied the murder of Ms Brenda Wong Tze-kwan in May 1989 and are being re-tried in the High Court before Mr Justice Duffy. The Crown claimed there was a love triangle. The court had heard Miss Wong was killed and her body wrapped in plastic food film and put in a trunk into which caustic soda was poured. Ms Wong was last seen when she left her flat at 5 am on May 6, 1989, after she received a telephone call. Wong said he had returned from Macau early on May 6 after a gambling trip and went to bed. He had asked Yu to wake him at 11 am so he could go to the races but she did not, he said. Wong said he had not made any inquiries about Ms Wong's whereabouts between May 6 and May 12 when he was arrested. When asked if he had any idea why Ms Wong would come over to his flat in the early hours of May 6, he replied: ''I do not know.'' The hearing continues.