About the Authors

Ming Li

Roles Conceptualization, Data curation, Investigation, Project administration, Validation, Writing – original draft

Affiliation National Intellectual Property Administration, Beijing City, China

Hui Li

Roles Data curation, Investigation, Validation, Writing – original draft

871689022@qq.com

Affiliation National Intellectual Property Administration, Beijing City, China

Competing Interests

The authors have declared that no competing interests exist.