同病相憐（同病相憐）　

◎ 同病相憐 tóngbìng-xiānglián

[fellow sufferers have mutual sympathy;those who have the same illness sympathize with each other;adversity makes strange bedfellows;company in distress makes trouble less;fellow sufferers commiserate with each other] 比喻因遭遇同樣的不幸而共相憐恤

同病相憐,同憂相救。——《吳越春秋》