坚

zhè zuò chéng bǎo yóu wú shù de jiān shí zhù chéng

这座城堡由无数的坚石筑成。

The castle is made of countless solid stones.

zhè shì yī zuò kě yǐ dǐ yù wài dí de jiān chéng

这是一座可以抵御外敌的坚城。

This is a strong city that can resist foreign enemies.

jiān bīng yìng bù kě cuī

坚冰硬不可摧。

The ice is hard and indestructible.

jiān xìn

坚信

firmly believe

tā jiān jù le wǒ men de hǎo yì

她坚拒了我们的好意。

She firmly refused our kindness.

tā jiān chēng zì jǐ shì wú zuì de

他坚称自己是无罪的。

He stated insistently that he was not guilty.

pī jiān zhí ruì

披坚执锐

wear armour and carry weapons

wú jiān bù cuī

无坚不摧

overrun all fortifications

gōng jiān

攻坚

assault fortified positions