* The first one refers to * * Shen Teng * *, an actor and director from Chinese mainland, who graduated from the PLA Art College. It has a wide popularity and fan base in the film circle, and has achieved success with many films. His name "Uncle Crack" may be a nickname, because he has lovely wrinkles on his face when he smiles.

* The second possible target is kim Ji Soo, a member of the Korean women's group BLACKPINK * *, who is called "anti-wrinkle essence" by fans and netizens because she will get wrinkles when she smiles in some pictures.

In a specific context, if more background information or context is provided, it may be more accurate to determine who it refers to. The name "Uncle Crack" has a sense of intimacy and humor, and it is a way to express love and goodwill, and it is not derogatory.