From May 22^nd to 23^rd, Dr. Stephen Kershaw from Brunel University London and Dr. Li Kershaw from University of Cambridge were invited to NIGPAS to cooperate with Dr. LI Yue on Silurian biotas, sedimentology and environment.

Dr. Stephen Kershaw gave a comprehensive lecture on sedimentology to the students, talking about the definition and taxonomy of carbonate and clastic rocks, teaching on how to learn from the geological map and thus construct its 3D model. Dr. Li Kershaw talked about the sinter deposits and related carbonates.