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Luminous high-redshift quasars can be used to probe of the intergalacticmedium (IGM) in the early universe because their UV light is absorbed by theneutral hydrogen along the line of sight. They help us to measure the neutralhydrogen fraction of the high-z universe, shedding light on the end ofreionization epoch. In this paper, we present a discovery of a new quasar (PSOJ006.1240+39.2219) at redshift $z=6.61\pm0.02$ from Panoramic Survey Telescope& Rapid Response System 1. Including this quasar, there are nine quasars above$z>6.5$ up to date. The estimated continuum brightness is$M_\text{1450}$=$-25.96\pm0.08$. PSO J006.1240+39.2219 has a strong Ly~$\alpha$emission compared with typical low-redshift quasars, but the measured near-zoneregion size is $R_\text{NZ}=3.2\pm1.1$ proper megaparsecs, which is consistentwith other quasars at z$\sim$6.

A Quasar Discovered at redshift 6.6 from Pan-STARRS1