1, The GWAC movie of Star 4, 7, 28, and 39 are given in the folder 'gif'.
2, The 43 GWAC light curves for 43 stars used in this paper are given in the folder 'gwac_flare_curve'.
3, The flares and periods found by our algorithm, are shown in pictures in the folder 'TESS_K2_flare_and_period_pic', and also recorded in '.csv' files in the folder 'TESS_K2_flares'.