bái​tóu​rú​xīn

to remain as strangers

Senses

白头如新/ 白頭如新 bái​tóu​rú​xīn to remain as strangers

Describes friends who have known each other for a long time but still do not understand one another, as if they were new acquaintances; literally "white heads like new"

References

antonym 白头如新/白頭如新 倾盖如故/傾蓋如故