1. Department of Physical Education, Guangdong University of Finance and Economics, Guangzhou, China
2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
3. School of Information and Computer Engineering, Pingxiang University, Pingxiang, China
4. Huashang College Guangdong University of Finance and Economics, Guangzhou, China