Winter, a member of the group Aespa, took care of Ningning with bad conditioned eyes and impressed fans.
Aespa, which includes Winter and Ningning, appeared at the outdoor music festival 'Water Bomb Seoul' held at Jamsil Sports Complex Stadium in Songpa-gu, Seoul on June 25.
Fans were worried about Ningning's eye condition after the news that she was confirmed to appear in 'Water Bomb' earlier.
In an interview with 'Vogue China 'in March, Ningning revealed her eye drops as an item she usually carries, saying, "I had surgery when I was little, so I can barely see my right eye. "I carry eye drops so that my eyes are not too dry".
Aespa members, including Ningning, wrapped up the performance safely. According to some stage footage taken by fans, Winter picked up the goggles that Ningning dropped and asked about the condition of her eyes.
[Pictures= aeaspa-official,imwinter, instagram]