entirely unrelated
Indifference is a Chinese idiom, pronounced m ò B ù Xi ā nggu ā n, which means that there is no connection between them.
explain
Describe each other as having nothing to do with each other.
source
But between Zhu Si, the string song is self like, one if also. (Yan Fu's Three Guarantees)
entirely unrelated
more than can be counted on one 's fingers - zhǐ bù shèng qū
Respect the past and despise the present - guì gǔ jiàn jīn