BERKELEY, CA: Hong Yinxing (right), chancellor and professor of economics with Nanjing University, signs a campus-wide exchange agreement with Professor Robert Birgeneau (left), also chancellor of UC Berkeley on April 5. The first stop of his one-week North American tour, Hong said his delegation of leading faculty aims at promoting Nanjing University as an outstanding high-learning institution, and fostering more academic and people-to-people exchanges with American and Canadian counterparts. They will leave for Johns Hopkins University in Washington DC on April 7, stop in New York City, and conclude their trip at the University of Waterloo in Canada.[Photo/Chang Jun]