划一不二 (huà yī bù èr) | Meaning: fixed | Chinese Idiom with Pinyin & Origin

to say one and mean just that (idiom); to keep one's word说一不二shuō yī bù èr

(idiom) one's actions are in keeping with what one says言行一致yán xíng yī zhì

constant · unvarying · (math.) invariant不变bù biàn

stiff · inflexible · mechanical · stubborn · to cut blocks for printing刻板kè bǎn

fixed · unalterable