In the video you could see that Hyun Joong is already very accommodating getting gifts and letter to fans. But there is this one fan who touch him his wrist. I hope that fans will not do this to any of their idols. It's a no no especially when one is already being very accommodating.
Thanks to 현중만 바라봐 for sharing the video on her YouTube channel.
Thanks to veggiedelight for the tip!