回複：thanks a lot, 皮匠老師. I am still a bit confused. Is my followin

Will that invalid my current H1B?
--- No Yeah

If I use EAD for that project, do I have to report it to my current employer
--- No

and use EAD to work for my current employer too?

--- No. I can still use H1B to work for my current employer till it expires.
Supposedly you need to file I-9 for EAD

http://blog.wenxuecity.com/blogview.php?date=200807&postID=8347#Wrong1