Explanation of words: harsh heart
Deep inside means harsh inside, which is an adjective.
Citation interpretation
Historical Records, Hanshu and other ancient books are deeply cited, which is called harsh heart.
Network explanation: harsh heart
The online explanation of the inner depth is also harsh.
The inner depth of poetry
The word "deep inside" is involved in Gong Ci, Deep Inside, Thank the Lord, Miscellaneous Poems of Numerous Societies, Deep Overseas and other works.
Idioms and words about inner depth
Idioms and words related to internal depth are: domestic noise, urgency, internal clarity and external turbidity, introspection and naivety, looking back and looking inward, helping saints, foreign insider, deep style, broad outside and deep inside, etc.