Brand-centered alliance model. The cooperation between first-class brands and first-class brands equals the first-class brand strong effect. The cooperation between second-class brands and first-class brands also equals the first-class brand synergy effect. The cooperation between first-class brands and second-class brands can only equal the second-class brand diminishing effect. The alliance model with brand as the core should be based on further strengthening the cultural core concept and consumer experience of "this brand" through cooperation with "other brands". For example, Evian, a world-renowned high-end drinking water brand, has invited the world's top fashion masters to design its packaging for three consecutive years - Yunshang bottle, Yunhai bottle and hand-made limited edition collection of handmade crystal bottles. The alliance with fashion masters has elevated Evian mineral water to the level of art and collection, endowed the product with extremely high added value, and indeed reflected the unique multi-element fusion fashion charm of the Evian brand.