细枝末节

jǐ shí nián qián de xì zhī mò jié méi bì yào zài tí le

几十年前的细枝末节，没必要再提了。

No need to rehash details of decades past.

guò dù zhù zhòng xì zhī mò jié

过度注重细枝末节

an obsessive attention to detail