Singer Yoon Do Hyun's past photo is gaining a serious amount of the interest! This photo dates back to 1996, when Yoon Do Hyun was in his 20s. Fans noted that with his honest smile and cute�V-sign, he look very different from his current 'tough' image. Netizens complimented, "He could be an idol", "15 years ago, Yoon Do Hyun was a pretty boy", and "I never imagined Yoon Do Hyun like this". Source: Prime News