Rejected - Other reasons mentioned in user notes - Please break the first paragraph, too much big paragraph. What it means.
It suggests that you should restrict the length of the paragraph, that is instead of making a paragraph of 120 lines,that looks like a huge block, split it in to different paragraphs consisting of 13- 15 lines.
That means you need to break your first paragraph into smaller paragraphs. The first paragraph should be captivating and sort of an interesting introduction as to what lies in the whole article. It should be short and not too long.