1. four words? Reference materials? Is bold type 4, followed by a colon. The specific reference content is Song No.5. A new line needs to be added when writing. The writing order is: (Chinese) Author? Title? Release information, or (English) author? Title? Release information.

2. In the whole paper, the references should be on a separate page. In addition, we should also pay attention to the following three points:

In the list of references at the back of the text, each reference should be arranged in Arabic numerals in the order in which it appears in the text. Be sure to number them in the order in which they appear in the text.

Please change the Chinese references in the reference list to Chinese and English.

Please fill in the full names of English periodicals and conference proceedings in the bibliography of periodicals and conference proceedings.