Thanks for sharing that. I didn't know about the difference between farmers' congs and standardized congs. Makes sense. It did seem wonderfully coincidental that an ancient local measuring term would be exactly one tenth of something metric. The difference was lost in translation. Like you, the thing I take away is the importance of looking at trends. Farmers I talked to reaped about 20% more rice (chaff and all) than in the past and were visibly happy with the stability and predictability of harvest now that water flows are under control. Good luck with your research.