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China Meteorological Administration(CMA)recently released its 40-yr(1979-2018)global Chinese reanalysis(CRA-40)dataset.To assess performance of the CRA-40 data in quantifying the regional water cycle,contributions of local and remote atmospheric moisture fluxes to precipitation in East China derived from CRA-40 are compared with those derived from the ECMWF reanalysis version 5(ERA-5).Observed precipitation and evaporation data are also used for validation.As for mean precipitation,CRA-40 matches the observation better in winter and spring than in summer,with a larger wet bias(1.41 mm day-1)in summer than that in ERA-5(0.97 mm day-1),particularly over South China.The conservation of atmospheric water vapor over East China measured by CRA-40 is comparable to that of ERA-5.Both reanalyses show a dominant role of the remote moisture transport in the East China precipitation.In comparison,the annual precipitation induced by the moisture influx from the west of the study domain in CRA-40 is 80 mm less than that in ERA-5.The recycling ratio of annual mean precipitation in CRA-40 is approximately 21.1％,slightly larger than that in ERA-5(20.1％).The maximum difference of each hydrological component between the two datasets appears in the summer horizontal moisture influx(3.57 x 107 kg s-1;ERA-5 is larger)and winter runoff(1.84 x 107 kg s-1;CRA-40 is larger).CRA-40 shows better performance than ERA-5 in capturing the interannual variability of precipitation over East China,as evinced by a higher correlation coefficient with the obser-vation(0.77 versus 0.33).The trend of summer precipitation since 2011 is better reproduced in CRA-40.Both reana-lyses show prominent contribution of the southern moisture influx to the interannual variation of precipitation.This study demonstrates the reliability of CRA-40 in representing the hydrological cycle over East China and provides a useful reference for future application of CRA-40 in water cycle studies.