f(x) performed their hit song "Lachata" on KBS Open Concert on 13th October and the show was aired earlier today!

My heart broke when i watched them performing in the rain....But i have to admit that they are very professional,although it is raining,but they never forgot their smiles,you can see them smilling from the very beginning of the performance until the end,kudos to f(x) for having such a high spirit!

But now please have a look at their performance!


4minute also performed on the concert!