[wayrad]

Hmm, that's different from the snippet I recalled...I'll have to see if I can find it again. Maybe my memory is off.

Edited to add: Aha, here it is, from a blurb over at Subterranean Press:
"Will there be more? I doubt it, and it’s not because of bad sales and worse publishers. It’s simply that I’d taken it as far as I could. Oh, I could come up with more ingenious plots and interesting characters and so on, but the Ox/Master Li format had become just that, a format, and no matter how well I wrote I’d just be repeating myself. Many writers are content to settle down with an endless if predictable series, but I’d be miserable, and so it was like deciding to quit smoking: cold turkey or forget about it, and I chose cold turkey. Anyway, it was a lot of fun while it lasted, and I hope Ox and Li Kao can continue to give fun to readers, and I most particularly hope that on dark and stormy nights some of those readers will be able to crawl into my alternate world and pull it over them like a security blanket. "

The two quotes seem contradictory, but maybe after Subterranean picked up the original series and the possibility of doing more of them opened up, he decided it wasn't a good idea after all. A pity that more series authors don't come to the same realization.