Chinese really are fine with plagiarizing. I'm guessing it's a cultural thing.
Well, as a Chinese, I'm really ashamed of what my countryman do these days. However, I can assure you it's not a "cultural thing." Remember for the vast majority of last 1,500 years, we were ahead of every one in the world? We didn't need to plagiarize anyone else back in the days.
It started just fairly recently, in the last decade, probably. The communist reign has destroyed our culture. It's a sign of the society is on the verge of collapse probably. Those girls are not even singers. They are just high-grade prostitutes. They were singing about how they are not ashamed of selling their bodies for money... really disgusting...