f(x) 4 Walls MV achieves 10 million views!!

f(x) have another amazing achievement with their latest hit song 4 Walls.

The official MV of 4 Walls reached 10 million views on Youtube earlier today, the music video received so much love from international fans since it was uploaded on 4th October.

Fans are curious about the storyline behind the mysterious music video though, check it out below in case you have not watched the MV before and congratulations to f(x) once again!