From May 5 to June 4, Prof. LI Rong-Yu from Brandon University, Canada paid an one-month visit to NIGPAS. He was invited to cooperate with Prof. ZHAN Renbin and Dr. HUANG Bing, and to give lectures and academic instructions to the students at NIGPAS. His recent research, which focused on multiple fossils from the Upper Cretaceous of Manitoba, Canada, was an excellent case for reconstructing the food chain/web in the past.