On the morning of October 24th, Prof. Jan J. Weigand from the Dresden University of Technology in Germany visited Peking University's College of Chemistry at the invitation of Prof. Zhang. In the A717 meeting room, he delivered an engaging academic lecture for the faculty and students of the College of Chemistry.

      Prof. Jan J. Weigand obtained his doctoral degree from Ludwig Maximilian University of Munich in Germany in 2005. His research primarily focuses on the reactivity of multiply charged and neutral main group element compounds in synthesis and sustainable applications. Additionally, he explores the recovery and recycling of rare earth metals, as well as value-added chemicals and elements.

      The title of his presentation was "Blueprint for a Modern 'Sustainable' Phosphorus Chemistry," where Prof. Jan J. Weigand shared the progress he has made and the industrial achievements in the field of phosphorus chemistry over the years. In the afternoon, Prof. Zhang hosted a small academic exchange discussion in the office with Prof. Jan J. Weigand, Prof. Wei, and some laboratory members. Prof. Wei and the lab members briefly introduced their current work, covering areas such as nitrogen fixation chemistry, phosphorus chemistry, and rare-earth metal chemistry. Prof. Jan J. Weigand expressed his appreciation for the lab's work and provided valuable suggestions. Finally, a sincere thank you to Prof. J. Weigand for his visit!