Attribute words, core words, flowing words. The three-step method of title production is the knowledge theory of e-commerce. The three-stage method of title making refers to attribute words, core words and flowing words. As we all know, commodity display is largely related to the title keywords when buyers search in the station, but it does not mean that a large number of keywords are piled up, and the probability of display will be large, but the exposure will be reduced. Just put the most critical core words in. Refer to the heading formula.