Comparison between the stellar tracks in terms of HRD evolution (left panel) and the surface oxygen mass fraction evolution (right panel). All tracks have an initial metallicity Z = 0.002 and initial mass M_i = 4 M_⊙. Non-rotating tracks are shown as solid lines, and rotating tracks are shown as dotted lines. The colour-code indicates the tracks obtained from different databases. Rotating PARSEC v2.0 and GENEC tracks are with ω_i = 0.59, and MIST is with ν/ν_crit = 0.4. All stellar tracks begin from the ZAMS. The black dots mark the TAMS, and black stars mark the end of the He-burning phase.