During his fourth year, Hsieh saw the works of artist Joan Carrillo, acclaimed as Spain's foremost expert in the technique of luster glazing. Hsieh marveled at the rich and colorful glaze, bought some pieces, and told his professor, Joan Llacer, that he would like to study this glazing technique.
4 年級時，他看到西班牙公認「閃光釉」技法最有名的藝術家 Joan Carillo 的作品，對豐富多變的釉色大感驚嘆，特地買回來，並跟主修教授 Joan Llacer 表明想學這種釉色技法。