Oct 13, 2025 Hajin Kim www.chosun.com On October 5, a video spread online showing a scary moment in Seoul’s Gangnam area. A man was attacking a taxi driver on the street. Several people tried to stop him, but one young man stood out. That person was Sun Hengyu, a Chinese trainee who dreams of becoming a K-pop star. In the video, he quickly stepped in and used a move called a “chokehold” to stop the attacker. Thanks to him, the situation didn’t get worse. Later, Sun Hengyu pos