Hyoyeon was so good at dancing that she was called THE celebrity of the trainee world....
"They asked Lee Minwoo who was from the same company during MBC's Dancing With the Stars2 which girl group member caught his eyes the most and he said "I'm an SNSD fan. Especially Hyoyeon who was so good at dancing ever since she was young. I thought that she would become the 2nd BoA so I took interest in her".
Super Junior Eunhyuk also said "Hyoyeon was extremely good at dancing during her trainee days so she stood out among the 100 trainees. Me too I went to Hyoyeon to learn dance""
Looks like her mom made her audition because she was so good at dancing (of course, she still does now). Hyoyeon has been with SM for 17 years now.... and 10 years with SNSD....
original post: here