Jindong Xu graduated with a Bachelor's degree from the China University of Mining and Technology and is currently studying at Chongqing University.

Yan Ran received MS and PhD degrees in mechanical engineering from Chongqing University, Chongqing, China, in 2012 and 2016, respectively. She is currently an associate professor and a doctoral supervisor at Chongqing University, a fixed researcher at the State Key Laboratory of Mechanical Transmission for Advanced Equipment, Chongqing University, a committee member of the Chongqing Science and Technology Association and a vice president of Chongqing Engineering Graphics Society, etc. Their research interests include CNC machine tools reliability technology and electromechanical product quality engineering. They have hosted and joined in almost 30 projects, published more than 100 academic papers, 24 invention patents and six copyrights of computer software.

Ke Tian graduated with a Master's degree from Chongqing University and is currently working at the Southwest Institute of Technical Physics.