whatistheapproachofpublicpropagation?

　　approaches

　　1,everyAncouldbeimportantatpropertime,thepositionofAndoesnotfix;

　　2,theeffectbetweenAandAnwouldbetwo-way;

　　3,fromPRperspective,thecommunicationbetweenBandAwouldbemoreeffectivethroughtheAn's;