"I still see visions of that car coming around the corner. Luckily the crash happened in the off-season," Birchall said.
He and his wife attended Zeng's sentencing as they needed the closure so they could move forward.
The police summary of facts said Zeng was driving a Mitsubishi rental car when he crossed the centre line into the oncoming lane on a corner. He was driving at 80km/h.
The Birchalls were travelling in a Nissan Murano at the same speed in an opposite direction. They swerved to their left to avoid collision with Zeng's car.
But Zeng swerved further right into a direct line in front of the other vehicle. Both cars collided head-on and were write-offs.
The victims vehicle stayed upright while Zeng's rental car rolled on its side.
Xiaoli Birchall suffered four broken ribs, a fractured sternum and sharp pain when she breathed or coughed. Peter Birchall and Collins had bruising and soft tissue damage to his sternum and upper chest.
The Birchalls' two small dogs were also injured. One suffered a broken pelvic bone and the other soft tissue injuries. Their vet bill was paid for by Zeng.