Professor Pan Zhilin,  a tenured professor at the University of Aberdeen in  UK, was invited to visit ECUST and held academic discussion with teachers and graduate students of the Natural Language Processing and Large Data Mining Laboratory of the Department of Computer Science of ECUST. The discussion was hosted by Professor Ruan Tong, Director of the Lab. Sun Chenglin and Liu Xuli, the graduate students working on the questioning and answering of medical knowledge, held discussion with Professor Pan on the different application of the traditional rule reasoning and the current deep learning method in knowledge questioning and answering.