diff --git a/README.md b/README.md
index d1a46bb..eeddb02 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,9 @@
 
 预览（较完整的论文预览见这里: [😀](https://blog.keldos.me/2021/05/md-latex-template/)）：
 
+![sample-essay_1](Supplemental/sample-essay-image/sample-essay_1.jpg)
+![sample-essay_2](Supplemental/sample-essay-image/sample-essay_2.jpg)
+
 | ![image-20210526201241978](https://gitee.com/Keldos-Li/picture/raw/master/img/image-20210526201241978.png) | ![image-20210526201312507](https://gitee.com/Keldos-Li/picture/raw/master/img/image-20210526201312507.png) |
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
 | ![image-20210526201429764](https://gitee.com/Keldos-Li/picture/raw/master/img/image-20210526201429764.png) | ![image-20210526201611922](https://gitee.com/Keldos-Li/picture/raw/master/img/image-20210526201611922.png) |
diff --git a/Supplemental/.DS_Store b/Supplemental/.DS_Store
index 5a57b6c..b37a740 100644
Binary files a/Supplemental/.DS_Store and b/Supplemental/.DS_Store differ
diff --git a/Supplemental/sample-essay-image/sample-essay_1.jpg b/Supplemental/sample-essay-image/sample-essay_1.jpg
new file mode 100644
index 0000000..cf825bf
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_1.jpg differ
diff --git a/Supplemental/sample-essay-image/sample-essay_2.jpg b/Supplemental/sample-essay-image/sample-essay_2.jpg
new file mode 100644
index 0000000..cc025d4
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_2.jpg differ
diff --git a/Supplemental/sample-essay-image/sample-essay_3.jpg b/Supplemental/sample-essay-image/sample-essay_3.jpg
new file mode 100644
index 0000000..3d54229
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_3.jpg differ
diff --git a/Supplemental/sample-essay-image/sample-essay_4.jpg b/Supplemental/sample-essay-image/sample-essay_4.jpg
new file mode 100644
index 0000000..b6e724b
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_4.jpg differ
diff --git a/Supplemental/sample-essay-image/sample-essay_5.jpg b/Supplemental/sample-essay-image/sample-essay_5.jpg
new file mode 100644
index 0000000..93fd608
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_5.jpg differ
diff --git a/Supplemental/sample-essay-image/sample-essay_6.jpg b/Supplemental/sample-essay-image/sample-essay_6.jpg
new file mode 100644
index 0000000..6f9950e
Binary files /dev/null and b/Supplemental/sample-essay-image/sample-essay_6.jpg differ
diff --git a/Supplemental/sample-essay.md b/Supplemental/sample-essay.md
index 36e5064..70a35d7 100644
--- a/Supplemental/sample-essay.md
+++ b/Supplemental/sample-essay.md
@@ -193,7 +193,7 @@
 
 
 **参考文献:** 
-<div>
+
 ［1］  维基百科编者.操作系统[G/OL].维基百科,2020(2020-11-24) [2021-01-09]. https://zh.wikipedia.org/w/index.php?title=操作系统&oldid=62920825.
 ［2］  计算机操作系统及发展探讨.田舜文[J].数码设计  （下）2020,9(6):3.
 ［3］  计算机操作系统功能与其相关分类.宋辰辉[J].电脑迷,2018(7):15.
@@ -208,5 +208,3 @@
 ［12］ Statcounter. Desktop Operating System Market Share China [DS/OL]. (2020-12-20) [2021-01-09]. https://gs.statcounter.com/os-market-share/desktop/china/
 ［13］ 维基百科编者.Microsoft Windows[G/OL].维基百科, 2021(2021-01-02)[2021-01-10]. https://zh.wikipedia.org/w/index.php?title=Microsoft_Windows&oldid=63546256.
 ［14］ 韩兵,李海坤.浅谈Windows操作系统[J].数码世界,2017(06):66-67.
-</span>
-
diff --git a/Supplemental/sample-essay.pdf b/Supplemental/sample-essay.pdf
index 5f67f41..478248a 100644
Binary files a/Supplemental/sample-essay.pdf and b/Supplemental/sample-essay.pdf differ