In the classical constituent quark model (CQM), all baryons can be described as three-quark (qqq) states.However, many difficulties and deviations have emerged in explaining the mass spectra and decay properties ofsome baryons by using the CQM, such as the strong coupling of N(1535) to the final states with strangeness andthe mass inverse problem between N(1535) and N(1440). In order to solve the above problems, pentaquark (qqqq￣q)models for some excited baryons are introduced by researchers. However, since many conventional quark modelshave adjustable ingredients, it will be difficult to distinguish the N(1535) and many other proposed dynamicalgenerated states from those generated states (qqq for baryons and q￣q for mesons) in these classical quark models.This difficult can be avoid if we can find the hidden charm baryons composed by qqqc￣c quarks.
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