Properties of our measured R_1/2, rd. Top: Correlation between R_1/2, rd in Yao et al. (2023) and our re-determined R_1/2, rd by the flexible equations applied in r-band in this manuscript for the 33 TDEs. Solid circle plus error bars in red show the results for AT2020wey. Solid line and dashed lines in red show X = Y and corresponding 1RMS scatters. Bottom: Correlation between R_1/2, rd in g-band and R_1/2, rd in r-band of the 33 TDEs (solid circle plus error bars in blue) and of the 5 classified SN-like transients (solid circles plus error bars in red). Here, due to SLSN-I with R_1/2, rd around 10, the SLSN-I is not covered in the bottom panel. In bottom panel, solid and dashed blue lines show X = Y and corresponding 1RMS scatters for the 33 TDEs.