“If you standardize all these signs, you not only take away the little giggle you get while strolling in the park but you lose a window into the Chinese mind,” said Mr. Radtke, who is the author of a pair of picture books that feature giggle-worthy Chinglish signs in their natural habitat.

Lest anyone think it is all about laughs, Mr. Radtke is currently pursuing a doctoral degree in Chinglish at the University of Heidelberg.

Still, the enemies of Chinglish say the laughter it elicits is humiliating. Wang Xiaoming, an English scholar at the Chinese Academy of Social Sciences, painfully recalls the guffaws that erupted among her foreign-born colleagues as they flipped through a photographic collection of poorly written signs. “They didn’t mean to insult me but I couldn’t help but feel uncomfortable,” said Ms. Wang, who has since become one of Beijing’s leading Chinglish slayers.

Those who study the roots of Chinglish say many examples can be traced to laziness and a flawed but wildly popular translation software. Victor H. Mair, a professor of Chinese at the University of Pennsylvania, said the computerized dictionary, Jinshan Ciba, had led to sexually oriented vulgarities identifying dried produce in Chinese supermarkets and the regrettable “fried enema” menu selection that should have been rendered as “fried sausage.”

Although improved translation software and a growing zeal for grammatically unassailable English has slowed the output of new Chinglishisms, Mr. Mair said he still received about five new examples a day from people who knew he was good at deciphering what went wrong. “If someone would pay me to do it, I’d spend my life studying these things,” he said.

Among those getting paid to wrestle with Chinglish is Jeffrey Yao, an English translator and teacher at the Graduate Institute of Interpretation and Translation at Shanghai International Studies University who is leading the sign exorcism. But even as he eradicates the most egregious examples by government fiat — businesses dare not ignore the commission’s suggested fixes — he has mixed feelings, noting that although some Chinglish phrases sound awkward to Western ears, they can be refreshingly lyrical. “Some of it tends to be expressive, even elegant,” he said, shuffling through an online catalog of signs that were submitted by the volunteers who prowled Shanghai with digital cameras. “They provide a window into how we Chinese think about language.”