Author contributions

The author would like to acknowledge all of the researchers who design and participate to the studies on EGT.
Shan Zhang (Formal Analysis, Visualization, Writing – original draft); Tao Pan (Formal Analysis, Investigation, Methodology); Ying-Hao Yu (Formal Analysis, Investigation, Validation); Zhi-Wei Ye (Software, Supervision); Tao Wei (Software, Supervision); Na Wang (Investigation, Resources); Jing-Ru Zhong (Investigation, Resources)); Li-Qiong Guo (Conceptualization, Supervision, Writing – review & editing); Jun-Fang Lin (Conceptualization, Supervision, Supervision, Writing – review & editing).