Hello Miki.

I am Greek and I have tasted both, but I realy do not find anything special about them to be honest.

People in Greece have these two mostly in the summer and usualy in sea food taverns with assorted appetizers.  I would go as far as to say that in Greece most people do not have these without appetizers.

Ouzo is Greek and Raki is Turkish.  

There is a lot of info on Wikipedia about these two if one want to find out more.

Do they sell these in China, how easy is to find them ?

I'm getting thirsty... :)

Rakı is an anise-flavored, distilled liqueur from Turkey. It is clear when poured, but when mixed with water becomes a cloudy white color (giving it the nickname "lion's milk"). It is often served with appetizers ("meze"), and makes a good complement to fish dishes. I have never had ouzo, but my understanding that it is only slightly different from rakı. I have also had a similar French liqueur called anisette, but anisette is sweet while rakı is not.

I don't drink alcohol, so I cannot answer your question.

But I can make a suggestion about your English.

Does anyone had ouzo or raki before? I'm really interested in them. Anybody can tell me more?

Has anyone had ouzo or raki before?

Can anybody tell me more?

Raki is the Serbian vodka? It so I drank it