1. Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
4. School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu 476000, China
5. School of Science, Xi'an Jiaotong University, Xi'an 710049, China