Table tennis Ma Lin ghost serve?

Question

Hi I was wondering if anybody knows how to do Ma Lin's 'Ghost Serve' here:

http://www.youtube.com/watch?v=v8advrudYZs

It's also called a 'side-under serve'. I've been playing table tennis for about 6 years now so I think I can do it but I don't know the movement/technique. Any tips are appreciated. Thanks.

I use the Penhold grip and use a DHS 4002 (one-sided, G888 rubber)

Answer 1

its a really hard serve im trying to learn it