On May 19, 2026, Ms. Wenxuan Li successfully completed her doctoral dissertation defense in Room B409 at the School of Chemistry, Sun Yat-sen University. The dissertation titled “Structural Design, Synthesis and Applications of Two-Dimensional Metal Halide Perovskites with Sulfur/Selenium-Containing Intercalating Cations” systematically investigated the regulation mechanisms of optoelectronic properties in perovskite materials. The defense committee consisted of Professor Daibin Kuang (Chair) from Sun Yat-sen University, Professor Xiaozhen Pan from South China Agricultural University, Professor Wuqiang Wu from Sun Yat-sen University, Researcher Mingzhu Long, from South China Normal University, and Associate Professor Baiquan Liu from Sun Yat-sen University. All members of the research group extend their congratulations to Ms. Wenxuan Li and wish her greater achievements in the future!