qiān​lǐ​dā​cháng​péng, méi​yǒu​bù​sàn​de​yàn​xí

inevitable parting

千里搭长棚,没有不散的宴席 (千里搭長棚,沒有不散的宴席) qiān​lǐ​dā​cháng​péng, méi​yǒu​bù​sàn​de​yàn​xí
inevitable parting
even if you build a thousand-league awning for it, every banquet must come to an end; no gathering can last forever

Sources

Definitions
CC-CEDICT