On April 13, 2025, the Fourth National Conference on Ultrafast Vibrational Spectroscopy, hosted by the School of Chemistry and Chemical Engineering of Shaanxi Normal University and the Key Laboratory of Applied Surface and Colloid Chemistry of the Ministry of Education, concluded in Xi’an.

Prof. Bian Hongtao from the Institute of New Concept Sensors and Molecular Materials at Shaanxi Normal University chaired the closing ceremony, expressing gratitude to all participants, committee members, volunteers, and sponsors for their contributions.

Over 200 delegates from more than 40 institutions nationwide attended the conference. Experts engaged in discussions on seven key themes: “time-resolved infrared spectroscopy and femtosecond multidimensional vibrational spectroscopy”, “sum-frequency vibrational spectroscopy”, “steady-state and time-resolved Raman spectroscopy”, “time-resolved terahertz spectroscopy”, “infrared and terahertz light sources”, “ultrafast vibrational spectroscopy theory”, and “electron-vibration coupling and electron-phonon scattering phenomena in ultrafast electronic spectroscopy”, exchanging insights on cutting-edge advancements and experimental methodologies.

The conference featured awards for outstanding oral presentations and posters. After expert evaluations, 10 researchers including Li Xinmao received the “Outstanding Oral Presentation Award”, while 16 participants such as Chi Zhen were honored with the “Outstanding Poster Award”.

At the closing ceremony, the next host institution was announced. Prof. Gai Feng, the designated chair of the 5th National Conference to be held in Beijing, thanked the current organizers for their exceptional arrangements and for the good participation experience, and extended an official invitation on behalf of the new organizing committee.