Hu, who worked for the Aviation Security Service, was a father of two young daughters, aged 8 and 11.
He had been waiting at the busy intersection at about 5pm when another vehicle ploughed into the back of his car.
Three vehicles, an SUV, a four-wheel drive and a wagon, were waiting at the lights on Botany Rd, East Auckland, when the third car was rear-ended.
Police were able to cut Hu's seatbelt and pulled him from the wreck. CPR was performed for several minutes but Hu could not be revived.
"It is such a tragedy. This man was out enjoying the day, doing nothing wrong, waiting at the lights and then this happened, just gone, it could be any one of us. It has damaged a family's life too," ex-St John first responder Dr Jacky Lam said at the time.
Hu's family was due to move into a new home in Howick to send his daughters to better schools. He was also a former sport teacher at Shanghai Jincai High School.
Colleagues and friends of Hu described him as a devoted father and family man.
A Givealittle page was also set up to help Hu's wife and children which saw more than $160,000 donated.