tokens: The authors would like to thank the data provided by the SDO , SOHO /LASCO, and Wind science teams; the anonymous referee’s valuable comments and suggestions that largely improved the quality of the paper; and the helpful discussions with Dr. Yu Liu and Junchao Hong from Yunnan Observatories, CAS, China. This work is supported by the Natural Science Foundation of China (11773068, 1163308, and 11363007), the Yunnan Science Foundation (2017FB006), and the West Light Foundation of Chinese Academy of Sciences. H.C.C. acknowledges the support by NSFC 11703084, 11633008, and 11873088.
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