SM Lee fondly recalled receiving Dr Liu's holiday greeting cards, which featured elegant hand-drawn line sketches.
Authorities had to cut power across the island to proceed with the rescue operation.
The 59-year-old pedestrian was taken to the hospital, but subsequently died.
Although the driver successfully fled from the scene, he was arrested the next day.
No further details were provided on Singapore’s position, nor was a timeline given for when a decision might be made.
Some netizens expressed discomfort and surprise at the request by the embassy.
Passengers had to walk along the road shoulder to board a replacement bus.
Supporters of the service say it offered "emotional value" to customers.
He was flung several metres by the impact of the collision.
White paint was splattered across two carpark spaces, with shoe prints indicating that people had walked through it.