Sub-galactic scaling relations with T$_{\rm e}$-based metallicity of low
  metallicity regions in galaxies: metal-poor gas inflow may have important
  effects?
  The scaling relationship is a fundamental probe of the evolution of galaxies.
Using the integral field spectroscopic data from the Mapping Nearby Galaxies at
Apache Point Observatory survey, we select 1698 spaxels with significant
detection of the auroral emission line \oiii$\lambda$4363 from 52 galaxies to
investigate the scaling relationships at the low-metallicity end. We find that
our sample's star formation rate is higher and its metallicity is lower in the
scaling relationship than the star-forming sequence after removing the
contribution of the Fundamental Metallicity Relation.We also find that the
stellar ages of our sample are younger ($<$ 1 Gyr) and the stellar
metallicities are also lower. Morphological parameters from Deep Learning
catalog indicate that our galaxies are more likely to be merger. These results
suggest that their low metallicity regions may be related to interaction, the
inflow of metal-poor gas may dilute the interstellar medium and form new
metal-poor stars in these galaxies during interaction.
