  Recently Belle collaboration reported new measurements for the branching
fractions with the first observing two processes of
$\mathcal{B}(\Xi_c^0\to\Lambda K^0_S)$, $\mathcal{B}(\Xi_c^0\to\Sigma^0 K^0_S)$
and updating data for $\mathcal{B}(\Xi_c^0\to\Sigma^+ K^-)$. Combined with
other known data on charmless two body decays of anti-triplet charmed baryons,
a lot of information can be derived with the assistance of $SU(3)$ flavour
symmetry. Using $SU(3)$ relations between different decay modes, we can give
some predictions based on the new measurements which can be tested with the
high luminosity experiments in the future. More interestingly, we find that a
global fit is now possible with the addition of new Belle data. In general,
there are 18 complex $SU(3)$ invariant amplitudes. We find that a scenario of
all amplitudes being real can fit the data well with a $\chi^2/d.o.f$ only
$0.773$. This indicates that neglecting the phases of the amplitudes is a
reasonable assumption. When more data become available, one may be able to get
more information for phases in the amplitudes.
  We give several comments on the feature of global fit regarding the branching
fractions, relations between different decays, and decays involving $K^0$ and
$\bar K^0$. Many of the unknown branching fractions and polarization asymmetry
parameters of anti-triplet charmed baryon for charmless two body decays are
predicted to be accessible by experiments at Belle, Belle~II, BES-III, and
LHCb. The validity of $SU(3)$ for charmless two body hadronic decays can be
more accurately tested.
