Yixing-Style Purple Clay Gongfu Tea Set with Four Cups in Presentation Box

This appears to be a traditional Yixing-style tea set crafted from purple clay (zisha). The set includes a small teapot and four matching cups, all nestled inside a silk-lined presentation box. The teapot features the classic three "knobs" on its lid—common in Yixing designs. This type of set is typically used for Gongfu tea ceremonies, prized for its ability to enhance flavor through the porous clay and its elegant, functional design.