To determine whether a novel was long or not, one could usually consider the following aspects: 1. Story length: Generally speaking, a novel is longer than a short story. The length of the story is usually between 5 million to 10 million words. 2. Plot: Long novels usually contain more complicated plots and character relationships that require more space to unfold and describe. 3. Writing pace: The pace of writing a long novel is usually slower than that of a short story. It takes more time to conceive and advance the story. 4. Reader's response: Long novels usually take longer to finish reading, so readers 'reactions are slower and take longer to adapt to the rhythm and structure of the story. If a novel is between 5 million and 10 million words long, the story is complicated, the writing pace is slow, and the reader needs more time to adapt, then the novel can be judged to be a long novel.