What is the phrase structure of red short messages?

Red short message is a phrase structure.

The phrase "bias", also known as "bias", is a phrase composed of modifiers and headwords, and there are relationships between modifiers and verbs, nouns, adjectives and modifiers before them. In the word red short message, red is an adjective and modifier, and short message is a noun. It is a head language, so it is a partial phrase.

A phrase is a grammatical structure composed of two or more sentence-making units with related meanings according to a certain grammatical relationship. It is a grammatical unit within a sentence, which is larger than a word in structure and should be composed of at least two words, but smaller in function than a sentence, and it does not contain the intonation characteristics of the sentence.