From June 18th to 29th, Jiabo Li, a leading scientist of Accelrys, came to visit RCDD. During these two weeks, Li gave several lectures to graduate students and talked about the work progress. Zhihong Liu, a first-year graduate student, said that Li gave an excellent lecture on genetic algorithm(GA), and now he could optimize the parameter with the help of GA. Li is very popular with the students. Because student always learn a lot from Li, especially the way to solve problems.