铮

铮亮

zhèng liàng

shiny; gleaming

铮铮铁汉

zhēng zhēng tiě hàn

a strong and determined man (idiom)

铮铮铁骨

zhēng zhēng tiě gǔ

see 鐵骨錚錚|铁骨铮铮[tie3 gu3 zheng1 zheng1]

铁骨铮铮

tiě gǔ zhēng zhēng

(idiom) (of character) staunch; unyielding