The paper format is not divided into columns; Magazines are printed in columns, which is convenient for reading and has nothing to do with the author. It is a matter of magazine typesetting. It is common sense to center the subtitle of the text. Note that the upper line is empty and the lower line is not empty. But the layout of the magazine has its own purpose, and the arrangement of printing is still irrelevant to the author. The most important things in the paper are notes, bibliography and references.