Actress Gong Seung-yeon is receiving widespread public attention following her appearance in a preview for tvN’s 'You Quiz on the Block.' It was revealed that Gong played a critical role in the recovery of her sister, TWICE member Jeongyeon, by identifying her physical symptoms and urging her to seek medical treatment during her battle with Cushing's syndrome. The sisters expressed mutual gratitude and emotional support, highlighting the strong bond that helped Jeongyeon overcome her most difficult period. The episode, scheduled for release, showcases the emotional journey of the siblings as they reflect on the challenges they faced together. | Actress Gong Seung-yeon is receiving widespread public attention following her appearance in a preview for tvN’s 'You Quiz on the Block.' It was revealed that Gong played a critical role in the recovery of her sister, TWICE member Jeongyeon, by identifying her physical symptoms and urging her to seek medical treatment during her battle with Cushing's syndrome. The sisters expressed mutual gratitude and emotional support, highlighting the strong bond that helped Jeongyeon overcome her most difficult period. The episode, scheduled for release, showcases the emotional journey of the siblings as they reflect on the challenges they faced together.