From December 19 to 20, 2020, the 19th national symposium on basic optics and optical physics in Changchun, and the 9th member congress of the Basic Optics Committee of the Chinese Optical Society were held in Changchun. Associate Prof. Xue Feng was elected to the Basic Optics Committee of the Chinese Optical Society.

This symposium is jointly sponsored by the Chinese society of Optics and the Chinese society of Physics, and organized by Northeast Normal University. More than 100 experts, scholars and graduate students from more than 30 universities and institutes, including Peking University, Tsinghua University and Chinese Academy of Sciences, et.al., attended this symposium. The invited talks and posters cover many active fields in optics, such as laser physics, laser chemistry, quantum optics, nonlinear optics and materials, ultrashort pulse laser and ultrafast phenomena, strong field physics, new optical devices and instruments, micro/nano photonics and bio-photonics. The latest research achievements and future development trends have been presented and discussed.