About the Authors

Yixiang Huang

Contributed equally to this work with: Yixiang Huang, Yuan Gan

Roles Conceptualization, Data curation, Methodology, Visualization, Writing – original draft, Writing – review & editing

Affiliation School of Mathematics, Renmin University of China, Beijing, China

Yuan Gan

Contributed equally to this work with: Yixiang Huang, Yuan Gan

Roles Data curation, Methodology, Visualization, Writing – original draft, Writing – review & editing

Affiliation School of Mathematics, Renmin University of China, Beijing, China

Xinqi Gong

Roles Project administration, Supervision

xinqigong@ruc.edu.cn

Affiliation School of Mathematics, Renmin University of China, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.