Extremely brave and formidable; possessing great resilience and strength, often to the point of appearing invulnerable.
他凭借着铜头铁额的毅力，终于成功克服了学习上的所有难题。
With 'brass head and iron forehead' determination, he finally succeeded in overcoming all difficulties in his studies.
Era:
Ancient
Frequency:
Synonym:
Story:
In ancient times, the Chinese land was inhabited by the Huangdi, Yan Emperor, and Chiyou tribes. The Huangdi tribe defeated the Yan Emperor tribe in the northwest, achieving the unification of these two major tribes.
The Yan Emperor then requested Huangdi to attack the Jiuli tribe. The leader of the Jiuli tribe, Chiyou, had 81 brothers, all of whom had human heads and beast bodies, with brass heads and iron foreheads.
The Celestial Goddess (Xuan Nü) was sent to bestow military strategies and divine talismans upon Huangdi, enabling him to subdue Chiyou.
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