a friend in court is better than a penny in purse 囊中有钱，不如朝中有友。

 

a friend in need is a friend indeed 患难见真交。

 

a friend in need is a friend indeed患难见真情

 

a friend is a second self 朋友是另一个我。

 

Misfortune tests the sincerity of friends 患难见真情。