If hydrophobic materials could speak, they would probably refer to themselves as “life butlers” and “safety guards”—the hydrophobic fabrics that act as “armor” for outdoor jackets can withstand heavy rain while allowing sweat to escape smoothly; the hydrophobic adhesives that serve as “nannies” for circuit boards can firmly lock in moisture and sweat, preventing short circuits in electronic components. This personified functional design transforms hydrophobic materials from cold industrial products into “little helpers” that protect our lives. In the kitchen, the “table butler” hydrophobic tablecloth is nothing short of a miracle. After spilling soy sauce or red wine, stains are politely “driven away” by the butler, not penetrating or staining, eliminating the headache of cleaning greasy tables; the “wok guardian” hydrophobic coating understands the pain points of cooks, preventing oil from sticking during cooking, and with a quick rinse after cooking, the cookware can be restored to cleanliness, saving both water and effort. In home life, the “wall doctor” hydrophobic paint specializes in treating the “difficult problems” of old houses. During the rainy season, it can prevent moisture from penetrating the walls, avoiding mold and peeling, keeping old houses dry; the “toilet guardian” hydrophobic glaze makes cleaning simple, as stains do not adhere to the inner walls, and a single flush can clean it, completely saying goodbye to the hassle of “repeatedly scrubbing the toilet.” From outdoor gear to household items, these hydrophobic materials with a sense of “role” solve one life problem after another with their specialized skills. As materials begin to “serve actively,” our lives become easier and more efficient.