Zhu Changhong plays a key role in investing China's $3.5 trillion dollars in foreign reserves. He is part of the management at China's State Administration of Foreign Exchange or SAFE, a division of the central bank. He maintains a low profile, yet he has played a critical role in shifting investment into Japanese and U.S. equities and bonds issued by the European Financial Stability Fund, reducing the risk exposure to U.S. Treasury's as the U.S. Federal Reserve changes monetary policy. From 45% of China's foreign reserves invested in U.S. government bonds, or $1.11 trillion, in June 2010, SAFE under Zhu's guidance reduced the allocation to 35%, or $1.14 trillon, in June 2012, according to a Wall Street Journal analysis. He has an interesting background. Coming from Anhui province, he studied physics at the University of Chicago, then shifted to life as a trader in financial markets at Allianz's PIMCO investment firm. After spending 20 years in the U.S., Zhu returned in 2009 as chief investment officer of SAFE. He was drawn back to China by another expatriate Yi Gang, a SAFE director who was an economics professor at Indiana University- Purdue University, Indianapolis....