Centering around the preparation of the twenty-four-meter opening scroll of Hexi Blue Calico Workshop. After the sample test is ruined by rain, everyone exposes that the "centuries-old sole edition" is actually an unfinished old version from 1996, abandoning false publicity, and jointly creating the documentary long scroll "Hexi's Twelve Waters". The story integrates intangible cultural heritage skills, environmental governance, and intergenerational reconciliation, refusing to mythologize tradition, and interpreting the true foundation of handicraft inheritance through honest records of failure and public disclosure of responsibilities.