1. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2. Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
3. State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China
4. Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing 100012, China
5. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
6. Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China