In some Chinese pottery styles, crackling was deliberately induced as an artistic effect in monochrome pieces by applying a specially made glaze before firing.
這種人為的開片，是在入窯燒前的素胎上，塗上一種特殊配方的釉藥，這種釉藥的膨脹係數和胎土不同，遇熱時，膨脹速度比胎土慢，因此無法敷滿整個胎面，而產生細細的裂紋，這就是開片了。