Chinahasthelargestpopulationintheworld.Thelargepopulationhascausedmanyproblems.Forexample,inthecontrysidepeople'slivingconditionsarenotverygood.Becausetherearetwoormorechildreninonefamilyandnoteverychildcangetachancetorecieveaeducation.Mostofthecitiesaremorecrowedthanbefore,andthetrafficismuchheavier.What'sworse,It'squitedifficultforalotofpeopletofindjobs.luckily,chinahastakenmanymeasure.Suchasone-childpolicytocontrolthepopulation,Thankstothepolicy,thegrowthofpopulationinchinahasbeencontrolled.