“The Second Session of the National Public Protection and Disaster Relief (PPDR) Communication Technology Seminars” Was Held in Xiangyang, Hubei province, on July 18-19, 2013. The opening ceremony was chairedby Zhu Hongbo,deputy director member of the Professional Committee ofthe Communication Application and Management,the China Institute of Radio, vice president of Nanjing University of Posts and Telecommunications, with Ma Xiaodong, the deputy member of the Professional Committee of theCommunication Application and Management, the China Institute of Radio and deputy director of the Science and Technology Information Bureau,the Ministry of Public Security, delivering a keynote speech in the conference.