Manchao Li has denied murder and denied breaching a protection order. Photo / Brett Phibbs
Warning: graphic content
Just one stab wound could have killed Jennifer Yang, but her ex-husband instead drove the weapon 12 times into her body and then strutted off, a prosecutor says.
Manchao Li, 65, denies murdering Yang in West Auckland on July 29 last year and denies breaching a protection order.
On Monday, Crown prosecutor Nick Webby said one stab wound went into Yang's spine and sliced her carotid artery during the attack.
A medical expert found that injury alone would have compromised blood supply to the brain, Webby told the High Court at Auckland.
Another injury, 10cm deep, penetrated Yang's right lung and another in the chest went 7cm deep.
Webby on Monday morning pointed to Manchao Li in the dock and told jurors: "He's the man who inflicted those 12 wounds in less than a minute."
"One would do the job, he admits."
Webby was referring to comments Li made last week, when the accused told the court: "Only stabbing once would cause death. There is no need to stab 12 times."
He said Li wrapped a Gerber hunting knife in a black plastic bag, which explained why witnesses to the Massey attack described a man "punching" instead of stabbing a woman.
Webby said Li was allegedly seen "strutting out like he was proud of himself" after the stabbing.
And the prosecutor told jurors that Li's actions on the morning Yang died were calculated.
"Like a hunter stalking his prey that morning, everything he did could be described as task-oriented, focused and devoted to the task at hand."
Jurors previously heard witnesses included construction site workers.
"After the punching, everything went silent. The body went limp and even the construction site went silent," Webby said.
Li has accepted he must have stabbed Yang, 56, but insisted he bore her no murderous or even malicious intent.
Webby said Li had a decade-long preoccupation with legal and property disputes which festered after his and Yang's marriage unravelled.
"You know that he was obsessed, he was fixated on this whole subject."
The prosecutor said Li could not pretend depression or failing to take anti-anxiety medication ruled out the formation of an intention to murder.
Webby said it would also not be surprising if Li reported feeling shaken after the attack.
"He'd just killed someone, and he knew it."
The jury previously heard allegations Li spoke of dismembering Yang and chopping up a lawyer.
Li has rejected these claims.
"Four days before the killing he's angry and he's talking about chopping someone up," Webby said.
Li's defence counsel Ron Mansfield then addressed jurors.
"He has acknowledged, on oath, that he's guilty of manslaughter."
Mansfield said his client was an isolated man with severe depression and suicidal ideation, and the Crown couldn't show Li had murderous intent.
"I have no doubt that Mr Li would be easily convicted by you if it wasn't for the fact he was so unwell at the time of the killing.
"The reality is, he's been unwell for a very long time."
Jurors heard Li was convicted in 2007 and in 2014 for breaching a protection order.
But the Crown and defence agreed neither of these convictions involved any allegation of violence or threats of violence.
Justice Pheroze Jagose then summed up the case before the jury retired at 1pm to consider its verdict.
If you're in danger now:
• Phone the police on 111 or ask neighbours of friends to ring for you.
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• Scream for help so that your neighbours can hear you.
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• Shine, free national helpline 9am- 11pm every day - 0508 744 633 www.2shine.org.nz
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• It's Not Ok: Information line 0800 456 450 www.areyouok.org.nz