Underglaze blue was rarer than underglaze red in the HongWu reign.The designs, made with domestic as opposed to imported cobalt, have a blackish-blue colour.Shapes are stout, with an easy naturalness.

• 洪武青花瓷存世较釉里红器更为稀少，由于采用国产青料，青花色泽蓝黑，但造型敦厚，具有质朴自然的制作风格。