According to related news, "in August 1994, a Shanghai mother gave birth to a baby boy in the hospital, and 24 years later, in June/20 18, the same mother gave birth to a baby girl again in the same hospital." This mother is Liu Jie's mother, so it can be inferred that Liu Jie's sister (Liu Mengmeng) is 4 years old this year.

Liu Jie, born in August, 1994, is a fireman. On May 20 14 1 day, he died heroically in a fire at the age of 20.