"If you want to marry someone, you must first carry three years of jagu stones." This is a long-standing local proverb. It tells that before a local man gets married, he must first pick three years of jagu stones from the seaside to use as building materials to build a new house. This proverb not only explains that jagu stone is a common traditional residential building material in the local area, but also makes us imagine the situation in Penghu, surrounded by the sea, where residents use local materials by the sea. The so-called yugu stone is actually a coral reef rock. Corals in the sea secrete calcium carbonate (limestone) during their growth. After hundreds or even tens of thousands of years of accumulation, these calcium skeletons form a colony called a coral reef. Later, after changes in the earth's crust, these coral reefs were exposed to the sea and turned into rocks for building houses. Sunshine, beach, and ocean are synonymous with summer. Blue sky, blue sea, and clean beach are the most beautiful bays in Penghu. The landscape of Penghu also attracts much attention. This is the core of the course and guides students to use the exclusive color tickets of each community attraction in the course. , internalizing the students’ sense of beauty and feelings for their hometown. Through the production of handmade gem candles, the unique color imagery of each community is integrated into the creation of gem candles to create unique gem candle cultural and creative products.