Hu Yongjian, Professor and Supervisor of doctoral students. He is an expert in Multimedia Security. He once worked respectively in The University of Warwick, Korea Advanced Institute of Science and Technology, Sungkyunkwan University, and City University of Hong Kong, specializing in Information security. Professor Hu has made unique contributions to reversible visible watermarking and large capacity lossless image data hiding. In the last 10 years, he has hosted and participated in the completion of more than 10 scientific research projects of international, national, provincial and ministerial level. He published more than 60 journal papers and international conference papers. Around 40 of them are SCI and EI indexed papers, some of which have been cited over 300 times. Professor Hu is a member of the Council of Guangdong Association of Image and Graphics and a senior member of IEEE.