In order to facilitate the audience's acceptance, why should traditional culture be spread through short videos?

It is precisely because of the abuse of prepositions and prepositional structures that the subject is trapped in prepositional phrases, which leads to the incompleteness of the subject.

The subject is the object of the predicate. For example, the word "I" in "I write" is the subject and makes the action of "writing", while "writing" is the predicate and is used to state the action of the subject, while "word" is the object of the action of accepting the predicate "writing", so it is called the object, and some grammar books are also called "object" or "receptor".