下学上達
かがくじょうたつ
beginning one's studies with something familiar and gradually increasing the depth of learning
下達上通 is read as かたつじょうつう (katatsujoutsuu) and means conveying the views of the subordinates to the rulers.
かたつじょうつう
katatsujoutsuu
かがくじょうたつ
beginning one's studies with something familiar and gradually increasing the depth of learning