Zhang Yongjun (1973), the corresponding author, is a male of Han ethnicity, from Heyuan, Guangdong. He graduated from the South China University of Technology with a bachelor's degree in 1995 and stayed on to work. He was a lecturer in 2003, an associate professor in 2005, a professor in 2012, and a doctoral supervisor in 2013. Currently, he has published over 300 papers, including over 60 in SCI and over 200 in EI; he has also published a total of 13 Chinese monographs, textbooks, English monographs, and translated works. He also authorized 62 invention patents.