You might have already seen their music video and performances, now Cube Entertainment has revealed a short 2 minute clip of how the Hot Issue music video was filmed with 4minute. But how do I put it, it's like a making of the MV with Hyun Ah since it's mostly her, and she shows us 1 of her feet which was swollen from dancing around in high heels for over 30 hours of filming. But she didn't let this put her down as she finished the filming professionally in pain. credit: elaisfangirl This making of was pretty much ineffective since it showed too little.