Han, Bing http://orcid.org/0000-0001-7703-5365
Funding for this research was provided by:
Shandong Province higher education "Green innovation Science and Technology Plan" project (2020RWE004)
Soft Science Project of Shandong Province (2019RKB01250)
Article History
Received: 4 October 2020
Accepted: 30 November 2020
First Online: 4 January 2021
Compliance with ethical standards
:
: Not applicable
: Not applicable
: Not applicable
: I declared that I have no conflicts of interest in this work.