A video of CHI CHI's Sui during her trainee days has been revealed to the public! In it, she's seen wearing a school uniform while dancing to SISTAR's "Shady Girl". Showing a fresh and youthful charisma, Sui is impressed netizens with her dedication to the song. After watching this dance cover, netizens commented, "Totally youthful and fresh," "She's really pretty and cute," and, "Natural beauty." Check out the video below! Source + Photos: OSEN