若即若离 (ruò jì ruò lí) | Meaning: lit. seeming neither close nor distant (idiom) | Chinese Idiom with Pinyin & Origin

to show respect from a distance (idiom) · to remain at a respectful distance敬而远之jìng ér yuǎn zhī

the appearance of unity, but divided at heart (idiom); seeming harmony belies underlying disagreement貌合神离mào hé shén lí

to be neither too familiar nor too distant · to keep sb at arm's length不即不离bù jí bù lí

lit. seeming neither close nor distant (idiom) · fig. to keep one's distance · (of a relationship) lukewarm · vague