This highly-recognizable song is from Japanese animation Detective Conan, a Japanese cartoon series which is quite popular among Chinese viewers of various ages.
Beijing Television, or BTV, released a report earlier this week saying this animation is nothing but a textbook of crimes, which does no good for kids.
北京电视台最近点名《名侦探柯南》，称其危害触目惊心，是一部赤裸裸的犯罪教科书。