Production Yield and Azimuthal Anisotropy Measurements of Strange Hadrons from BES at STAR

We report the production and azimuthal anisotropy measurements of strange multi-strange hadrons at STAR BES energies. The $\Lambda/K^0_s$ ratio is reported 3 GeV observed to increase faster with transverse momentum than that higher number-of-constituent quark (NCQ) scaling $v_2$ has been studied 19.6 (BES-II). NCQ holds for particles anti-particles, which can be considered as an evidence partonic collectivity. $K^{*0}$ resonance also 7.7-39 (BES-I) $K^{*0}/K$ suggests hadronic re-scattering dominates over regeneration in central A+A collisions. Using ratio, we lower limit phase lifetime $( t_{kin} - t_{chem} )$.