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OnDecember20,1999,thePeople’sRepublicofChinaresumedexerciseofsovereigntyoverMacao,markingtheendof400yearsofforeigncontrolonChinesesoil.Tocommemoratetheevent,theStatePostalBureauissuedtwonewstampsandasouvenirsheet.ThestampsweredesignedbyYangWenqingoft...