Channel means that in general ESP and EFP systems, every path from camera to CCU through integrated cable is called channel.

Zhang Huigang, Yugur, Associate Professor, School of Journalism and Communication, Northwest University for Nationalities, Ph.D. student, Sichuan University. He has planned and arranged various TV programs in CCTV, Hunan Satellite TV, Gansu Satellite TV and other media.

Publishing works such as "Analysis of Professional Skills of Film and Television Directors"; He has won the Excellent Achievement Award of Philosophy and Social Sciences in Gansu Province, the Teaching Achievement Award in Gansu Province, the Top Ten Young Teachers and the National and Provincial Excellent Instructors for more than 80 times.

And served as the director of several parties. He presided over and participated in many projects such as the National Social Science Fund, Gansu Social Science Fund, and the construction of excellent courses. He has published many articles in various periodicals such as Contemporary Communication, Journal of Lanzhou University, China TV and newspapers such as China Science News and China Education News.