Baby Tiantian was born in December 2017 in a hospital in Guangzhou, a port city to the northwest of Hong Kong.
After their death, their parents fought a legal battle to use the embryos and hire a surrogate to carry them.
Once this challenge was met, the families had to set about finding a surrogate and, with this service illegal in China, they had to set their sights overseas.
At the Nanjing Drum Tower Hospital, Liu's fertilised embryos sat in a tank of liquid nitrogen, preserved at minus 196 degrees Celsius. They finally obtained a court order allowing them to obtain four of the embryos, before "smuggling them over the border to Laos and finding a surrogate mother", The Times reports.
The newspaper explained how the lack of precedent for a case of this kind had forced the deceased couple's parents through a legal minefield before the surrogacy could proceed. The next problem for the little one was the issue of his citizenship, so the surrogate mother traveled with a tourist visa to China to give birth to him.
A child has been born in China four years after both his parents died in a devastating auto crash. Last month, the family celebrated Tiantian's first 100 days by holding a small party.
Liu's mother, Hu Xinxin, told the local media: "Tiantian's eye looks like my daughter's but overall, he looks more like his father".
When the child was born, the grandparents were also required to take paternity tests to prove they were, in fact, Tiantian's relatives, but the extraordinary effort was worth it.
"This child came into the world with sadness".
Shen Xinnan, the father of Shen Jie, was quoted as saying that he only plans to tell the boy what happened to his parents when he is older and in the meantime will say they are living overseas. We will definitely tell him in the future.