Acknowledgements
This commentary is a translation of Chinese script, translated by Prof. Jianbo Shen (China Agricultural University, China) and Prof. William J. Davies (Lancaster University, UK), and revised by Prof. Zhengxia Dou (University of Pennsylvania, USA).
RIGHTS & PERMISSIONS
The Author(s) 2020. Published by Higher Education Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0)