A husband and wife should stand together through hardship, never leaving each other.
Tips
history
Rooted in 《礼记·儒行》: "爵位相先也,患难相死也" — the true ru scholar yields rank to others but stands ready to die for them in hardship. 患难与共 distills this ethic of solidarity.
usage
Strongly positive. Describes deep friendships, marriages, comrades-in-arms — bonds tested by real adversity. Often paired with 生死与共 (share life and death).