He finished work around 11am and met friends at a local restaurant. There he drank beer and Baiju, a Chinese spirit similar in nature and strength to whisky. It can be between 35 and 60 per cent alcohol.
Around 1.30pm, Pan left, got into his car and drove away, scraping his wheel rim on the kerb while doing so.
He drove through the Central Mall carpark, on to Victoria St and along Ranolf St towards Malfroy Rd, and was seen cutting off another motorist, not indicating for any of his turns and crossing the centre line while turning on to Ranolf St.
"[Pan's] manner of driving caught the attention of two civilian motorists ... [They] became concerned that the defendant was either a very poor driver or intoxicated," the summary said.
Pan's approach to the Ranolf St/Malfroy Rd roundabout coincided with that of 71-year-old Martine Gale, who was walking home from the supermarket using a walking stroller.
Gale was crossing the road as Pan approached the roundabout travelling between 40 and 50km/h. Gale was clearly visible to motorists behind Pan but he did not slow down and hit Gale, knocking her to the ground and driving over her.
According to the summary, Pan slowed down "momentarily" after running over Gale then continued driving. A witness followed him to a Devon St property and saw him "stumbling and swaying" as he went inside.
The witness directed police to the house. They knocked at the door for three to four minutes before Pan answered the door with the phrase "What? What happened?".
According to the summary, he smelled of alcohol, his eyes were glazed and his speech was slurred.
Blood taken at 3.15pm, after his arrest for failing to remain at a crash to ascertain injury, showed he had 214 micrograms of alcohol per 100ml of blood. The legal limit is 50mcg.
In spontaneous comments made after his arrest, Pan said he did not remember hitting anyone.
"He could not remember driving to Devon St and believes the reason for this was that he was too drunk."
Gale suffered complex pelvis and femoral fractures and a severe head injury. She was taken to Waikato Hospital and died six days later on January 29 due to head trauma.
Pan was previously also facing a manslaughter charge which is still on record but a plea has not been entered. That charge is expected to be removed at sentencing.
Pan will be sentenced on September 9 and has been asked to undergo restorative justice.