Meaning:
“哪吒,” or Nezha, is a Chinese protection deity based on the Hindu god Nalakubar. “头” here means “hairstyle.” In Chinese mythology, he is described as a teenage warrior with three heads and six arms who is extremely strong and fast, like a superman. He has appeared in such classical novels as “The Journey to the West.” Nezha wears his hair wrapped up in a double buns style, and therefore, this term refers to the “double buns hairdo,” which has caught the eyes of Chinese netizens since the four members of the Chinese women’s team wore this hairstyle at the 4×100m relay final at the Tokyo 2020 Olympics.
Example:
A: 舞台上唱歌的哪个小朋友是你女儿？
Wǔtái shàng chànggē de nǎgè xiǎopéngyou shì nǐ nǚ’ér？
Which one of the kids singing onstage is your daughter?
B: 中间那个留着哪吒头的小姑娘。
Zhōngjiān nàgè liúzhe nézhātóu de xiǎogūniang。
The one in the middle wearing a double buns hairdo.
A:真可爱！
Zhēn kě’ài！
How adorable!