  To enhance the scientific discovery power of high-energy collider
experiments, we propose and realize the concept of jet origin identification
that categorizes jets into 5 quark species $(b,c,s,u,d)$, 5 anti-quarks
$(\bar{b},\bar{c},\bar{s},\bar{u},\bar{d})$, and the gluon. Using
state-of-the-art algorithms and simulated $\nu\bar{\nu}H, H\rightarrow jj$
events at 240 GeV center-of-mass energy at the electron-positron Higgs factory,
the jet origin identification simultaneously reaches jet flavor tagging
efficiencies ranging from 67% to 92% for bottom, charm, and strange quarks, and
jet charge flip rates of 7% to 24% for all quark species. We apply the jet
origin identification to Higgs rare and exotic decay measurements at the
nominal luminosity of the Circular Electron Positron Collider (CEPC), and
conclude that the upper limits on the branching ratios of $H\rightarrow s
\bar{s}, u\bar{u}, d\bar{d}$, and $H\rightarrow sb, db, uc, ds$ can be
determined to $2\!\!\times\!\!10^{-4}$ to $1\!\!\times\!\!10^{-3}$ at 95%
confidence level. The derived upper limit for $H\rightarrow s \bar{s}$ decay is
approximately three times the prediction of the Standard Model.
