Inspired by this image shown to me by a Chinese friend I began to wonder about this possibility. The Chinese could have figured out how to use steam for motive power (perhaps they already had?).
After the An Lushan rebellion which killed off so many Chinese people, there would most likely have been a shortage of workers in many places. This also tracks with the theory that some historians of the OTL industrial revolution propose that rising wages in England made using human muscle-power for manufacturing prohibitively expensive.
One potential scenario: A hobbyist engineer who previously owned a traditional artisanal manufacturing workshop figures out how to restart his business, dormant due to lack of labourers, using a rudimentary steam engine. I'm envisioning some kind of trip hammer based manufacturing, since the foot-powered trip hammer was already in use in China . Alternatively, a textile mill dormant due to lack of labour is restarted using a water-powered spinning mill, mirroring the progression of innovations seen in OTL England.
So - thoughts?