Tetra and pentaquarks with multi-flavor contents

Recent hadron experiments keep providing evidences of exotic hadrons with multi-quark components.
These multiquarks are self-arranged into various configurations such as diquarks, hadronic molecules and so on.
In this seminar, we discuss possible structures of tetra and pentaquarks with multi-flavor contents including recently observed T_cc, Pc and P_cs. Based on our recent studies in the quark model and hadron models, we discuss where and how different quark structures emerge.