Dr. Yong Guan is a professor of Lanzhou Jiaotong University and also the Registered Public Equipment Engineer of China who has been focusing on HVAC field since 2013. They received their Ph.D. degree from Beijing University of Technology in 2015 and are responsible for research on heat-humidity environment control of solar greenhouse buildings. He has undertaken two projects of the National Natural Science Foundation of China, and two projects of the Natural Science Foundation of Gansu Province. These projects are mainly concentrated on energy-saving in buildings.