The legendary idol group will celebrate 18 years this March.
The entertainer shared a picture with EXO members Xiumin, Chanyeol and Suho, as well as f(x)'s Amber and Kim Dong Wan of Shinhwa.
The singer donated money to women forced into sex slavery by the Japanese government during WWII.
No winner was announced during the November 7 episode.
f(x) take their first win for "4 Walls" during the November 5 episode of 'M! Countdown.'