Vietnamese achieve Nobel Prize, Is that an illusion?

[ducphu]

I just wanted to add to Sang56's explanation of the term "Yank". It is short for "Yankee" and does mean American. All American children are familiar with the song Yankee Doodle, it was and still is considered a patriotic American song. Only in the Civil War was the term "Yank" used derisively for Northerners, as "Rebs" was used to called Southerners. Then, in the Cold War it surfaced again as a derisive term. Americans were "Yanks" and the other guys were "Commies" or "Reds". Americans are keen enough to recognize that only in time of wars does the term "Yank" have negative connotations. In other times, it is merely an expression of envy. Millions of people every year knock on the Yankee front door begging for student visas to study in Yankee Universities, work visas to be employed by Yankee companies, and business visas to acquire the Yankee dream. Millions of people every year sneak in the Yankee back door or hop over the Yankee fence to chase the Yankee dollar. The Yankee government can't keep up with the backlog of cases of people wanting to be a Yankee citizen. Worldwide, every time a natural disaster in the form of earthquakes, floods, tsunamis, occurs, it's the Yankee dollar and technology to the rescue.

Reading Carolton67’s explanation of the word “Yank”, I see that the the meaning of the word from the Carolton67’s explanation of the word is completely different from the Sang56’s except the origin of the word.
From the Sang56’s explanation, I understand that Yank is a derisive term with negative meaning vs from Carolton67’s explanation it seem to me that Yankee is always a dream for people around the world.
When we want to welcome an american, should we say “Hi Yankee”, is it impolite or elegant?
Pls?