American Idol is big. Mongolian Cow Sour Yogurt Super Girl's Voice is huge. Super Girl--as China's dairy-company-sponsored imitation of Idol is known--drew a TV audience of 400 million for the finale of its four-month run last year. Voting by text message, viewers chose Li Yuchun, 21, a college student who sang like a man and sometimes dressed like Mick Jagger, as their 2005 Super Girl.
It turns out that she may also be the last one. The State Administration of Radio, Film and Television, China's chief broadcast regulator, last week issued new rules governing Idol-inspired shows. The directive says contests...