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The Chinese Yuan Hits 20-Year High.

Long-time readers of this letter are well aware of my advice to hold cash in the Chinese Yuan ETF (NYSEARCA:CYB) for the past four years. Those who followed my advice profited nicely. As of today, the Yuan is threatening to punch through to a new 20-year high.

Who knew that the Yuan would be one of the big winners from Ben Bernanke's QE3? Since the surprise announcement in mid-September, the Chinese currency has appreciated by 1.1%, and higher climes beckon. With American monetary policies seeking to devalue the dollar, and Chinese policies resulting in an appreciation of their own currency, the Yuan can only go up over the long-term. How hard is that to figure out?

The Yuan to you and me is known domestically in China as the "renminbi", or people's currency. China has a quasi-fixed exchange rate against the U.S. dollar that limits movement to just a couple of percent a year.

Since the People's Bank of China removed a decade-long dollar peg in 2005, it allowed a very gradual rise in this band of 2-3% a year. That is a vastly superior return compared to the zero interest Americans currently earn from money market funds, cash management accounts, or through buying Treasury notes with up to two year maturities.

One thing is certain. A free-floating Yuan would be at least 50% higher than it is today, and possibly 100%. I can say this in confidence having watched the Japanese yen appreciate from ¥360 to the dollar to ¥75 while running a trade surplus of similar magnitude for the past 40 years, an increase of almost 400%.

In fact, the desire to prevent foreign hedge funds and speculators from making a killing in the market is a not a small factor in Beijing's thinking to keep its currency artificially undervalued. The Chinese Central bank governor, Zhou Xiaochuan, says he won't entertain a revaluation for the foreseeable future. He is no-doubt thinking about the millions of Chinese workers who would lose their jobs if their exporting employers' razor-thin profit margins are vaporized by a stronger currency.

The Americans say they need a stronger Yuan now. And now the matter has become a campaign issue, with candidate Mitt Romney saying he would label China a "currency manipulator" on day one in office, not a nice thing to say to the country that is supposed to fund the bulk of his promised tax cuts. Obama has responded in kind, filing a WTO complaint on Chinese export restrictions of rare earth metals essential for our manufacture of electric cars and the dumping of solar products, which forced Solyndra into bankruptcy.

I think you could see continued weakness in the Yuan as long as Europe is in the penalty box, slowing the Middle Kingdom's economic growth. That makes it a safe bet for at least five more years.

Buy the Yuan ETF on weakness. Just think of it as a cash management tool with an attached lottery ticket. If the Chinese continue to stonewall liberalization of their currency, you will get the token 2%-4% annual revaluation the swaps have been discounting. Given the massive $250 billion annual trade surplus the Middle Kingdom is now running with the U.S., the chances of a prolonged fall in the Yuan against the dollar are minimal. If they cave, then you could be in for a home run.