In 2003, Mr Duan was hired by Peking University Chinese Culture Institute as a visiting professor and director of Yi Institute. In the winter of the same year, he was invited to visit Singapore to give lectures and was warmly welcomed by local Chinese. After that, he went to Singapore to give lectures in May 2005 and June 2007, consulting and planning for many overseas entrepreneurs.
In June 2006, Mr. Duan and Mr. Duan were invited to give lectures and have academic exchanges in Tokyo, Japan, which was a complete success.