Yunnan University (YNU) holds activities to celebrate National Security Day on April 15. [Photo/ynu.edu.cn]

Yunnan University (YNU) held activities to celebrate National Security Day on April 15.

The activity was organized by the School of Physics and Astronomy in partnership with the Yunnan Department of Ecology and Environment.

During the activity, brochures offering tips and advice on how to help protect the environment and protect against radiation were given out. 

Academics were invited to answer questions about environmental protection and protection against radiation. 

A lecture themed on nuclear safety was delivered by Yu Yilin, chief engineer of the Yunnan Monitoring Station of Radiation and the Environment.

Yu Yilin, chief engineer of the Yunnan Monitoring Station of Radiation and the Environment, delivers a lecture on nuclear safety. [Photo/ynu.edu.cn]