Others treated them as rare treasures drawn from the essence of the kiln's fire. In fact, this mysterious gossamer of red glaze came from the oxidization of the iron contained in the clay.
而大多數人是以之為稀世珍寶的，認為它是聚窯火精華，幻化而成，不可多得。事實上，揭開神秘的面紗，所謂的「窯變」，乃是因為胎骨的土質中，所含的鐵，入窯燒之後氧化還原，使釉面上出現了不定形的紅色效應。