A significant work titled Knotted Fields, co-authored by Professor Liu Xin from the School of Physics and Optoelectronic Engineering at BJUT and Distinguished Visiting Professor Renzo L. Ricca of the School, has been published by the internationally renowned academic publisher Springer. This book has been included in the long-standing "Lecture Notes in Mathematics" series of the publisher. With its unique perspective on this topic, and the authoritative reviews by experts in the field in each chapter, this book is expected to become an internationally important document in the study of the topology of knotted fields.

The book consists of nine chapters. Professor Liu Xin and Professor Renzo L. Ricca authored the first and third chapters respectively, which elaborate on the algebraic topological invariants of vortex knots and the multivalued potential field in physical knotted fields. The remaining seven chapters were written by eight experts on knotted field topology, including fellows of American and European mathematical and physical societies, founding editors and editorial board members of top mathematical and physical journals, and reviewers and scientific advisors for major research funds in the US, UK, and some other European countries, such as Professors L.H. Kauffman, P. Sutcliffe, C.F. Barenghi, D.W. Sumners, and M.R. Dennis.

From September 2 to 11, 2019, BJUT's Mathematical and Physical Science discipline and Beijing-Dublin International College at BJUT jointly hosted a Summer School and International Forum on "Knotted Fields in Physics and Biology". Approximately 80 scholars and students from 12 countries, including 20 international participants from the UK, US, Canada, Italy, Russia, the Czech Republic, and Poland, attended. The authors of the chapters in this newly published book were all lecturers at this international forum, and the book's content encompasses the topics covered in the forum lectures, and the latest research developments in the field since 2019.

Since its establishment, the School of Physics and Optoelectronic Engineering at BJUT has promoted interdisciplinary studies and international exchanges and cooperation. The School will continue to strengthen its in-depth cooperation with top universities and research institutions worldwide, striving to create a high-level academic research platform.