Blue ocean words are a type of product keywords, also known as "zero few words" and "long tail words". Specifically, it refers to keywords that have a certain degree of buyer search interest at the front desk, but suppliers publish fewer products. Usually the number of exact matching products corresponding to this word does not exceed 3 pages, so peer competition is low. Once a supplier can accurately use these words and publish a qualified product information combined with the quality of the information, it will quickly increase exposure and clicks. When making titles, you can use the keyword search function of e-commerce brain to find suitable blue ocean words to form titles