天下没有不散的筵席/ 天下沒有不散的筵席tiānxiàméiyǒubùsàndeyánxí(also tiānxiàméiyǒubúsàndeyánxí)all good things must come to an end
(proverb) literally meaning there is no banquet under heaven that does not end; used to express that all meetings and things eventually come to a close and parting is inevitable