On the afternoon of July 27, 2021, a group of 23 people from the Affiliated Middle School of Lanzhou University came to our college to study and visit.

 In order to enable students to have a deeper understanding of physics and improve students' interest in physics, Professor Han Weihua gave students a report entitled "China's' core 'crisis" in conference room 3016 of Gezhi building, and Professor Liu Yuxiao gave two reports entitled "gravitational wave - ripples in time and space".

 After the report,teacher Guo led the students to visit the large instrument platform and arranged to visit and study in the electron microscope center.