To be firm and unyielding; to have an unbending will.
面对困难和挑战，他始终吾膝如铁，绝不退缩。
Facing difficulties and challenges, he always remained unyielding, never retreating.
Era:
Ancient
Frequency:
Next Idiom
To be firm and unyielding; to have an unbending will.
Era:
Ancient
Frequency: