On July 8, the "Jida International Workshop on Quantitative Economy ", organized by the Center for Quantitative Economic Research of Jilin University, was successfully held in Conference Room A604 of Dongrong Building in 2019. The guest speaker, Professor Pengfei Wang of the Hong Kong University of Science and Technology, brought a wonderful lecture to teachers and students on the theme of" Information Friction, Endogenous Economic Cycle and Financial Crisis ". The workshop was moderated by Professor Tang Chuang, Deputy Director of the Centre.