After half a year of repeated attempts, Hsieh successfully fired a piece using bismuth oxide. He also tried combining copper oxide, silver oxide and bismuth oxide in the same piece, which required a high level of glazing skill.
經過半年反覆試釉，謝嘉亨終於成功燒出氧化鉍，並嘗試將氧化銅、氧化銀、氧化鉍 3 種金屬元素融合在同一件作品中，挑戰難度極高的釉燒技法。