MBLAQ’s Lee Joon shocked Jung Hyung Don with his reference to infinite challenge.

SBS 'Go Show' aired on June 8, featured Lee Joon, Kim Jong Min, ZE:A’s Kwang Hee, and Yoon Do Hyun as guests.

On this day, when Lee Joon was asked what his favorite four-character idiom was, he replied 'Moo-Han-Do-Jun (infinite challenge), shocking Jung Hyung Don.

Lee Joon continued, "I seriously love that. I really want to try everything in life", revealing that 'infinite challenge' is his life motto.