The surname is Song.

Song Yanfei’s surname is Song because her father’s surname is Song. Song Yanfei's father used to be a Hong Kong policeman. Song Yanfei's parents are very different in age. Song's father is 67 years old, while Song's mother is only 55 years old. From the current state of the two, it can actually be seen that Song's mother has black hair. Fa, still looks very young.

Song Yanfei was born in Australia on May 24, 1995, and currently lives in Shanghai. When she was 16 years old, Song Yanfei was discovered by a talent scout at the school gate. After passing the selection process, she went to South Korea's JYP Entertainment Company for training. She participated in many performances during her three years as a trainee, and later returned to China due to a leg injury.