2008 Nobel Prize winner in economics, Princeton University professor, world outstanding economist – Paul R. Krugman on May 11-13, 2009 visited China. He had a speech at Peking University and debated with China’s top economist- Li Yining, China Pacific Construction Group Chairman of the Board-Yan Jiehe, president of Peking University’s Guanghua School of Management -Zhang Weiying, Qinghua University Professor-Li Daokui, etc. Patty Chen had co-assisted to participate the activities in Beijing. The three companies are PattyC Property Group, S & T Global Inc., And the East Runming Technology Development Co., Ltd.