Li, Jianguo http://orcid.org/0000-0001-5238-6353
Liu, Lili
Funding for this research was provided by:
The Ministry of Education of Humanities and Social Science project (17YJCZH085)
Article History
Received: 30 April 2019
Accepted: 23 December 2019
First Online: 31 December 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interests related to the publication of this article. In addition, our paper is not under consideration for publication elsewhere, in whole or in part.