The show should "maintain a happy atmosphere," SARFT said in the notice to the show's producer, a television station in the central province of Hunan.

And in a move that would shock Simon Cowell, the acid-tongued judge of "American Idol," the broadcast watchdog said judges were prohibited "from mocking or humiliating contestants."

Contestants must be at least 18, and Xinhua said "their hairstyles, clothes, fashion accessories, language and manners should be in line with the mainstream values."

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