!214 add video in quick video

Merge pull request !214 from Hanshize/master

tutorials/source_zh_cn/quick_start/quick_video.md

@@ -43,4 +43,10 @@
 <source id="mp44" src="https://mindspore-website.obs.cn-north-4.myhuaweicloud.com:443/teaching_video/video/%E6%89%8B%E6%8A%8A%E6%89%8B%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8.mp4" type="video/mp4">
 </video>
 
-**查看代码**：<https://gitee.com/mindspore/docs/blob/master/tutorials/tutorial_code/lenet.py>
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+**查看代码**：<https://gitee.com/mindspore/docs/blob/master/tutorials/tutorial_code/lenet.py>
+
+### 模型参数保存与加载
+
+<video id="video5" controls width="1100px" height="550px" poster="https://mindspore-website.obs.cn-north-4.myhuaweicloud.com:443/teaching_video/cover/%E6%89%8B%E6%8A%8A%E6%89%8B%E7%B3%BB%E5%88%97/%E6%95%99%E7%A8%8B-%E6%A8%A1%E5%9E%8B%E5%8F%82%E6%95%B0%E7%9A%84%E4%BF%9D%E5%AD%98%E5%92%8C%E5%8A%A0%E8%BD%BD.png">
+<source id="mp45" src="https://mindspore-website.obs.cn-north-4.myhuaweicloud.com:443/teaching_video/video/%E6%A8%A1%E5%9E%8B%E5%8F%82%E6%95%B0%E7%9A%84%E4%BF%9D%E5%AD%98%E5%92%8C%E5%8A%A0%E8%BD%BD.mp4" type="video/mp4">
+</video>
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