Liqing Li Author

Yu Chen is a researcher at Shaan’xi Provincial Institution of Educational and Scientific Research, China.

Wei Fang is a researcher at Tsinghua University, Beijing, China.

Liqing Li is a freelance researcher and writer, formally of the University of Bristol, UK.

Paul Morrissey is a freelance researcher and writer, formally of the University of Bristol, UK.

Chen Nie is a lecturer and researcher at Beihang University, Beijing, China.