Zhècì duōkuī le lóuxià dàjiě, zhēnshì yuǎnqīn bùrú jìnlín.
Thanks to the lady downstairs this time - truly, a near neighbour beats a distant relative.
Tips
history
Canonised in Shi Nai'an's 《水浒传》 chapter 24: "As the saying goes, a distant relative is no match for a near neighbour - don't let the courtesy lapse." Already a proverb by the Ming.
register
Functions as a proverb - often opened with 常言道 or 俗话说. Used in everyday advice rather than formal writing.