"The fragrance of Liyuan is fruitful, and the party members gather to celebrate July 1." To celebrate the 99th anniversary of the founding of the Communist Party of China, on July 1, 2020, on the occasion of "July 1st", the Party Committee of the School of Physics and Optoelectronic Engineering launched "Celebrating July 1st"  series of activities, including "Bright Identity, Set an Example", "I Promise, Expose the Party Age" and "Tell the War Epidemic Story, Realize the Original Mission".Hoping that all party members will not forget their original aspirations and keep their mission in mind; live up to their youth and move forward.