Acknowledgement
We thank the anonymous referee for careful reading of the manuscript and useful suggestions. This research was supported by the Korea Astronomy and Space Science Institute under the R&D program (Project No. 2020-1-600-05) supervised by the Ministry of Science and ICT (MSIT), and the National Research Foundation of Korea (NRF) Grant No. 2020R1A2C3011091, funded by MSIT. DK acknowledges support by the National Research Foundation of Korea (NRF) grant (No. 2021R1C1C1013580) funded by the Korean government (MSIT). SL acknowledges the support from the National Research Foundation of Korea (NRF) grant (No. 2020R1I1A1A01060310) funded by the Korean government (MSIT). TCH acknowledges financial support from the National Research Foundation (No. 2019R1I1A1A01059609). We thank the staff at the iTelescope.Net, DeepSkyChile, ObsTech, SAO, CBNUO, DOAO, LOAO, SOAO, and McDonald observatories for their help with the observations and maintenance of the facilities. This research made use of the data taken with LOAO and SOAO operated by the Korea Astronomy and Space Science Institute (KASI), CBNUO of Chungbuk National University, DOAO of National Youth Space Center (NYSC), the McDonald Observatory, and the Siding Spring Observatory.
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