Well, the authors' byline says they're from Northeastern University, Shenyang 110169, China and Faculty of Management and Economics, Dalian University of Technology, Dalian 116024, China. I've heard that Chinese universities sometimes have explicit publication quotas or offer cash bonuses for publications. Having never worked at a university in China, I cannot personally verify that though.

MDPI also spams anyone it thinks might be willing to submit a paper or serve as an editor, and does not seem to care much about the quality of the submissions it receives.