Funding for this research was provided by:
Natural Science Foundation of Zhejiang Province (LQ19E020009)
Scientific Research Foundation of Hunan Provincial Education Department (18C0814)
aid program for the Science and Technology Innovative Research Team in the Higher Educational Institutions of Hunan Province
National College Students Innovation and Entrepreneurship Training Program (201910547003)
Article History
Received: 3 June 2020
Accepted: 24 June 2020
First Online: 2 July 2020