let me give you a specific example
Step 1:
go to: http://www.tudou.com/programs/view/G1cT2ywoG6A/
Step 2:
click: 貼到博客或BBS on the bottom
Step 3:
copy: 貼到博客/空間去的HTML代碼:
you will get:
Step 4: open your editing board to post your article
Step 5: click: key
Step 6: paste your codes
Step 7: click key to close this window
Step 8: post your article