A relative afar is less use than a close neighbor (idiom). Take whatever help is on hand, even from strangers.
Definitions (粵典–words.hk)
語句
勸人同鄰居打好關係,事關萬一有咩事上嚟需要人哋幫手,住得遠嘅親戚點都唔及隔籬鄰舍咁快手、咁方便 Distant relatives are not as good as nearby neighbours (because neighbours can help and take care of each other rather instantly).
Definitions (Wiktionary)
proverb
Nearby neighbours are better than distant cousins (because they can help and take care of each other).
Definitions (Kaifangcidian)
(沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
Mandarin
远亲不如近邻。
遠親不如近鄰。
yuǎn qīn bù rú jìn lín 。
A good neighbour is better than a brother far off.
A close neighbor is better than a distant relative.