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Chiral thermodynamics of charmed mesons is formulated at finite temperature within a 2+1+1-flavored effective Lagrangian incorporating heavy quark symmetry. The chiral mass splittings are shown to be less sensitive to the light-quark flavors, attributed to the underlying heavy quark symmetry. Consequently, chiral symmetry restoration is more accelerated in the strange charmed-mesons than in the strange light mesons, and this is in striking contrast to the chiral SU(4) result. We also show thearXiv:1502.07911v1 fatcat:lqdqrmp7pvcjtkrdz3zzweagji