Duōnián bù liánxì, lǎo péngyǒu yě biàn de shēngfen le.
After years out of touch, even old friends grow distant.
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Colloquial. 分 takes a neutral tone here (shēngfen, not shēngfēn). Often heard in family contexts pushing back at over-formal politeness: 别这么生分 (don't be so distant).
