Steps for embedding a video from youku/tudou:
(The embed block works on a random basis, so I suggest we don't use it. There is a failure example at the bottom of this post. )
The tricky part is the video will not be visible until you save the changes and log out, and then visit the page as a public visitor.
An Embedded Block from Tudou
A Code Block from Tudou
Youku Code Block
youku Code Block
Embed Block from Youku