Tools/raw materials: Dell Playbox G 15, win 10, Word20 16 Tools/raw materials: Dell Playbox G 15, win 10, Word20 16 and click on the menu bar. Then click Insert Endnote. After inserting the endnote, we can see that the note is "I" and we can change it.

1. Click where you want to insert the note reference. Click Cross Reference on the Insert menu. In the Reference Type box, click Footnotes or Endnotes.

2. In the "Which footnote to refer to" or "Which endnote to refer to" box, click the annotation you want to refer to. Click the Footnote Number or Endnote Number option in the Reference box. Click the Insert button, and then click the Close button.

3. The documents cited in this paper are coded in Arabic characters in the order in which they appear, and the serial numbers are placed in square brackets; When multiple files are referenced in the same place, the serial number of each file is listed in square brackets.

4. Use ","between serial numbers; If it is a continuous serial number, it can be marked with the starting and ending numbers "_". The same document has been cited many times in the treatise, with only 1 number. The cited page number is placed outside "[]", and the page number is not repeated in the literature list.