Su Yanzhou, inheritor of Yunxi colored lanterns, guards his traditional lantern workshop—until the lantern festival is canceled and orders are returned. Cultural creative planner Lin Wantang brings fresh ideas, hoping to bring lanterns into daily life through detachable bamboo joints and hands-on classes. Su Yanzhou fears losing authenticity; Lin Wantang fears the craft dying out. From conflict to collaboration, they experiment repeatedly at the ancient bridge market and the bamboo-shadow workshop. Finally, at the river lantern festival, the starry lantern corridor lights up, and traditional lanterns are seen by more people through tradition preserved and innovation embraced. A positive-energy intangible cultural heritage story about craftsmanship and renewal.