diff --git a/docs/tutorial-extras/2-videocoach.md b/docs/tutorial-extras/2-videocoach.md
index 779e028..ba163f7 100644
--- a/docs/tutorial-extras/2-videocoach.md
+++ b/docs/tutorial-extras/2-videocoach.md
@@ -6,4 +6,4 @@ sidebar_position: 2
 
 ## 1、vi/vim 的使用
 
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+<video controls width="50%" height="50%" src="https://upos-sz-mirrorbd.bilivideo.com/upgcxcode/14/26/1442922614/1442922614-1-192.mp4?e=ig8euxZM2rNcNbRVhwdVhwdlhWdVhwdVhoNvNC8BqJIzNbfq9rVEuxTEnE8L5F6VnEsSTx0vkX8fqJeYTj_lta53NCM=&uipk=5&nbs=1&deadline=1744002055&gen=playurlv2&os=bdbv&oi=1947878723&trid=82fe2e1c19c149099a4a963d1e0f84eeT&mid=386252359&platform=html5&og=hw&upsig=93fcf8848ff45eb2782038ca9209e62e&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,mid,platform,og&bvc=vod&nettype=0&bw=38281&orderid=0,1&buvid=&build=0&mobi_app=&f=T_0_0&logo=80000000"></video>