The humanity of Changmin (TVXQ) revealed by former security guards is Hot Topic.

● Mr. Park Tae-hyuk who appeared on YouTube "LAB TV". In the past, I worked in a condominium where entertainers live.

● Normally, I don't greet entertainers, but Changmin called out to me every time I met him.

● An opportunity to reaffirm the importance of greetings.