The $H_0$ Tension in Non-flat QCDM Cosmology
  The recent local measurement of Hubble constant leads to a more than
$3\sigma$ tension with Planck + $\Lambda$CDM (Riess {\it et al} 2018). In this
article we study the $H_0$ tension in non-flat QCDM cosmology, where Q stands
for a minimally coupled and slowly-or-moderately rolling quintessence field
$\phi$ with a smooth potential $V(\phi)$. By generalizing the QCDM
one-parameter and three-parameter parametrizations in Huang {\it et al} 2011 to
non-flat universe and using the latest cosmological data, we find that the
$H_0$ tension remains above $3.2\sigma$ level for this class of model.
