I.TheSituationandTendencyofFertilityTransitionThedrasticchangeinChinesefertilitysincethe1970sisthemostprofounddemographicchangeincontemporaryChina.Asthegoaloftheplannedchildbearingeffort,China’slowfertilityhasalreadybecomeareality.Thetransitioninfertility I. The Environmental and Tendency of the Transfer of the United States in the United Kingdom and the United States in the United States of America plan for the transfer of benefits