He told the police officer inter alia that he had panicked, that he had dragged the deceased's body into the bathroom, put water into the bath and placed the deceased in the bath as he wanted to remove finger prints. He said that he threw the hammer off the Gladesville Bridge. He told the police officer that he had stolen a number plate from a discarded car in Adelaide and had placed it on his vehicle. He said that he had thought about giving himself up but was afraid that if he did so, his son "would be chased back to China."
22 The offender told the jury that after he dropped Miss Lu at Eastwood he collected some money and was in a daze at the time. He was in complete shock and was very scared. He did not tell anyone and left Sydney. The offender gave evidence that he did not tell Constable Tong about being choked as he had not slept well and his brain was not functioning normally at the time.
23 The deceased's father arrived at … at around 9pm on the night of the murder. The front door to the premises was locked and the lights were off. When he walked into the bathroom, he saw his son facedown in the bath which was full of water. His son, he said, was immersed in water and blood was everywhere.
24 Forensic evidence given during the trial included Senior Constable Colver's testimony of areas of diluted blood staining on the hallway wall which had been wiped down with something like a wet towel or a rag. Diluted staining and blood in the toilet water, Senior Constable Colver opined, indicated that a person may have washed up or introduced blood into the toilet. Gavin Henderson, a forensic biologist, gave evidence that three of the swabs taken from the mop found in the premises yielded full profiles of DNA that were consistent with originating from Ming Hai Jiang.
25 Dr Orde, the forensic pathologist, conducted an autopsy and described nine injuries to the head of the deceased. The numbering system which the pathologist used had no relationship to the timing or actual significance of each of the head injuries. Injuries 3, 4, 5, 6, 8 and 9, Dr Orde considered, were each likely to have been caused by one blow to the head. The three fairly neat semi-circular marks suggested that the complex injury (injury 1) which extended over 37mm in the high central occipito-parietal scalp, was caused by three applications of force. Dr Orde was of the opinion that injuries 2 and 7 were likely to have been caused by either one or possibly two blows to the head. Dr Orde observed that underlying injury 1 there was a depressed fracture of the skull extending over 42mm. As to injury 2, there was a further depressed fracture extending over 27mm. With regard to injuries 5 to 8, which were quite close together, Dr Orde found underlying those injuries another area of depressed fracturing of the skull and some radiating fracture lines. There were multiple areas of bruising to the brain surface, many of which would have been caused by the direct application of force corresponding to the injuries the pathologist had seen. Dr Orde opined that the head injuries themselves could have been fatal to the deceased. He said that both the severity of the injuries themselves and the number of injuries would be entirely in keeping with these injuries having been independently fatal.
26 The deceased, Dr Orde said, would have been likely to lapse into unconsciousness and have bled quite profusely from the head injuries. Dr Orde told the jury, given the severity of the injuries, that it would be unlikely that the deceased would remain standing after receiving more than one or two blows. It was not possible for him to say, however, whether the head injuries were caused whilst the deceased was standing up or lying down.
27 Dr Orde gave evidence of injuries to the left and right hands of the deceased. There was, he said, a gaping semi-circular laceration to the medial aspect of the back of the left hand. He expressed the opinion that this was a blunt force injury similar to those on the deceased's head. There was quite extensive bruising overlying the back of the left hand and there were fractures of the metacarpal bones of the little, ring and middle fingers. Dr Orde observed a superficial laceration overlying the little finger metacarpal of the right hand with a further laceration overlying the far part of the middle finger metacarpal. Over the majority of the back of the hand, most prominently at the little finger side and extending onto the wrist, there was diffuse faint blue bruising and swelling. There was bruising over the back of the index finger of the right hand. Internal examination revealed moderate bruising over the back of the right hand extending over the middle and the left finger metacarpals. The right middle finger had also fractured. Dr Orde also identified what he described as moderate bruising over the wrist and adjacent forearm. Dr Orde expressed the opinion that given that the locations of the injuries to the left and right hands of the deceased were predominately on the back of the hands, they would have been inflicted whilst the deceased was attempting to defend himself from injury. The overall pattern of the injuries suggested so-called "defensive injuries". In cross-examination by Mr Murray, he said that the injuries were non-specific for causation and the scenario put to him by the Crown was no more than a possibility. In further cross-examination by Mr Murray as to injuries to the right hand side of the deceased's face, Dr Orde said that all of these injuries would have been caused by the application of blunt force but were non-specific as to the means of blunt force that was applied. The injuries, he said, would have needed a significant degree of force to bring them about.
28 Yanna Fang, the wife of the deceased, told the jury that her husband had suffered a back injury prior to their marriage in 2006 when he fell while working for Domino's Pizza. He had neck pain as well. She said the fall had caused long-term injury problems for her husband. He had to sleep in a very hard bed or even had to lie on the floor. He could not do, she said, heavy lifting. Either swimming or golf helped with his back condition.
29 I am satisfied beyond reasonable doubt that the Crown has excluded as a reasonable possibility that the deceased attacked the offender and grabbed hold of his neck. The only rational inference, (which I draw beyond reasonable doubt) from the combination of: