Whole-sample IV estimate (-0.953, Table 6a) is "our overall estimate" and is repeated in the conclusions together with the five subsample estimates (urban/rural, east/middle/west, Table 7), which the abstract headlines as policy references "regarding both a nationwide uniform and a differential regional perspective"; Table 6 cols (b)-(c) with dummies (900430, 900431) are only stepping-stones motivating the subsample split, not headlined. || "As with price elasticity, the national estimation is -0.953 but declines to about -0.87 from urban to rural areas. However, from the perspective of eastern, middle, and western areas, the price elasticity for households in the middle and western areas (around -0.41) is lower than those in the eastern area (-0.639)." (p. 8, printed journal page)
Jia, J. J., Guo, J., & Wei, C. (2021): "Elasticities of residential electricity demand in China under increasing-block pricing constraint: New estimation using household survey data." Energy Policy, 156, 112440.