Two-fermion final states at International Linear Collider

The pair productions of leptons and quarks at $e^{+}{e}^{-}$ Higgs factory are an important probe for new physics via precise measurements. The discovery and exclusion limits of $Z^{\mathrm{\prime }}$ models at the International Linear Collider with $\sqrt{s}=250$, 500 and 1000 GeV are calculated with selection efficiencies estimated in the existing full simulation studies. It shows a large potential of BSM searches with precise measurements at future energy-frontier $e^{+}{e}^{-}$ colliders.