It is unsurprising finding this kind of stuff. There is pretty bad blood between the nations of Eastern Asia. And, given that those countries are very olds, their feuds stretch centuries or even millennia back. Mongol Emperor Kublai Khan attempted to invade Japan twice in XXIII century. Japanese ruler Toyotomi Hideyoshi attempted to conquer China by the way of Korea in 1591. Chinese Empire kept Vietnam under its rule for one thousand years. And so on.
Ironically, Eastern Asia is the biggest and most profitable overseas market by manga publishers -or at least it was back in the nineties-, and many Asians declare they "hate Japan, love anime shows". And often they plagiarize Japanese shows, or use commit Copyright violations.
For example, back in the seventies, super robot shows were all rage in Japan... and Korea. There are dozens of Korean robot cartoons are a rip-off of Japanese robot shows. The most (in)famous ans most popular was http://en.wikipedia.org/wiki/Taekwon_V, a shameless Mazinger-Z rip-off.
Unfortunately, a lot of people mixes politics and old national grudges with entertainment. And many people uploads to youtube montages of Taekwon easily crushing and tearing Mazinger-Z apart Mazinger-Z like a way to show Korea beating Japan.
(Although they also do those videos because Fan Dumb. They simply hate Mazinger because it is the original, Taekwon a rip-off, and they know it. Or they hate other robots because they think if you are a fan of something, you must hate everything else. I distinctly remember a picture depicting Taewkon stomping on Eva-01 while holding the ripped heads of Mazinger-Z and Gundam RX78. Yes, that would happen).
It is sad seeing that kind of "I hate your country" propagandistic pamphlets. And yes, it is ironical anime music is used in anti-Japanese propaganda.
It is a clear copyright violation, but I do not know what the copyright holders can do against it. China can say they are not violating anything because they are not breaking laws they have signed over.