A Taiwanese Tenmoku cup is a traditional ceramic teacup known for its rich, glossy glaze, often featuring unique patterns like oil spots or streaks. Originating from ancient Chinese pottery traditions, these cups are highly valued for their elegant aesthetics and exceptional craftsmanship. The interplay of light on the glaze highlights its depth and complexity, making it a prized choice for tea enthusiasts and collectors. Kuo Cong-Ren (郭聰仁) specializes in glaze expression, using layered spray glazes to master the interplay of their incompatible properties. This technique creates a misty landscape of overlapping mountain peaks, where the flowing glaze effect intertwines with an ink-splash effect reminiscent of oil painting, resulting in a new and unique glaze texture.