I remember hearing someone on the old board mention that the Sung Dynasty of China was close to an industrial revolution, before the Mongols came along. Any way we could get an actual IR going in China at that time? If so, what're the consequences? If the Mongols still manage to conquer the Sung (who were the most difficult state to conquer for the Mongols), you could see the general dissimination of the technology across the entire Eurasian landmass...