坚

钻坚仰高

zuān jiān yǎng gāo

lit. looking up to it, it gets higher; boring into it, it gets harder (idiom) (from Analects)

黄庭坚

huáng tíng jiān

Huang Tingjian (1045–1105), Song poet and calligrapher

中坚

zhōng jiān

core

乘坚策肥

chéng jiān cè féi

to live in luxury

坚不可摧

jiān bù kě cuī

(idiom) invulnerable; indestructible; impregnable

坚信

jiān xìn

to believe firmly

坚信礼

jiān xìn lǐ

confirmation (Christian ceremony)

坚冰

jiān bīng

ice

坚固

jiān gù

firm

坚固性

jiān gù xìng

firmness

坚执

jiān zhí

to persist

坚壁

jiān bì

to cache; to hide supplies (from the enemy)