Hardened and resistant to punishment; describes someone who is very cunning, experienced, and resilient in mischievous or illicit activities, akin to a seasoned rogue.
他从小就调皮捣蛋，挨了多少次训斥也无济于事，真是贼皮贼骨。
He has been naughty and mischievous since childhood, and countless scoldings have been of no avail; he is truly hardened and resilient to consequences.
Era:
Ancient
Frequency:
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