Lee Hyori challenges her fellow agency junior group SPICA, 'Climb Cheonggyesan (mountain) to its peak and back.'

In an On Style 'Lee Hyori's X Unnie' episode that aired on August 6, she said, 'Go to the nearby Cheonggyesan, climb to the top, and come back.'

In response to Lee Hyori's emergency call, the group showed up in colorful clothes and kill heels. Upon hearing their mission to climb a mountain, they laughed in disbelief.

SPICA's Juhyun made her way to the top of the mountain in 20cm kill heels, using all the strength she could muster. Likewise the other members of the group did their best to climb the mountain, all the while massaging their sore legs.

This day Lee Hyori agreed to help SPICA produce their new album and promised to be their 'X Unnie' mentor and help them behind the scenes. SPICA must hold a soft spot for Hyori. Otherwise it's hard to imagine why Hyori would take on this role while she's busy with her wedding preparations.