Super Junior's Eunhyuk revealed that there is an appearance lineage in SM Entertainment.  

On the KBS2 "Do Dream" that aired on Saturday, TVXQ, who returned after a year and 10 months, with their song "Catch Me," made an appearance on the show. Super Junior's Eunhyuk and Kyuhyun also appeared.

Eunhyuk appeared to reveal TVXQ's secret. He said, "When I first saw Max Changmin, I knew why he was chosen," and he revealed the appearance lineage of SM Entertainment. 

Eunhyuk said that Max Changmin had good looks and a strong eye gaze, like Kangta's and Choi Siwon's that SM Entertainment liked.

On the other hand, his first impression of Yunho, was that he didn't fit with the company's image. He thought that 'soon enough, he might even leave,' and made people laugh.