U.S. billionaire investor and Berkshire Hathaway CEO Warren Buffett (2nd L) and Microsoft founder Bill Gates (2nd R) pose for a photo while each holds a cup of DQ ice cream at a new Dairy Queen store in Beijing, capital of China, Sept. 30, 2010. International Dairy Queen Inc is owned by Berkshire Hathaway. (Xinhua/Ren Zhenglai)