This article studies Hermitian structure on complex manifolds. We introduce the torsion of the Chern connection on Hermitian manifolds and present a global result with the K?hler form related to the torsion coefficients with respect to the connection 1-form. On compact Hermitian manifolds, by introducing a linear operator and, based on it, establishing a duality of differential operators on
-forms, we prove an identity between the K?hler form and the connection 1-forms. Furthermore, we show that the integral of the K?hler form can be explicitly expressed via the connection 1-form and vanishes under the Gauduchon condition.
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