On Fri, May 13, 2016 at 04:59:32PM +0800, Aric wrote:

Hi Valdis,
      Do you mean the Grag is "Greg KH"[off-list ref]; ?  But I'm still learning, where can I get a simple task to get into? The test task is also okay, pls give me test specification or what test env. it required.

There is no Grag, we only have Greg KH.
Now that you are learning maybe you can start with
http://eudyptula-challenge.org/

and:
1) never toppost
2) never send mime mails.

regards
sudip