This expression often goes with the concept “adversities reinforce a nation’s resilience.” The latter depicts a nation while the former applies to an individual. Stating that trials and tribulations can open one’s mind and stimulate the development of great wisdom, the expression reminds people to be proactive rather than reactive in the face of given circumstances. When things are favorable, one should be alert and prepared for potential risks. In the face of adversity, one should manage to open one’s mind and be optimistic. Stressing subjective initiative and self-reliance, this mentality gives full play to one’s talent or potential to tide over tough times.

A loyal and reliable person, though weak at first, will surely become powerful. Great hardships can open one’s mind. So why worry even when one is in danger? (The History of the Northern Qi Dynasty)

Since ancient times, there have been cases where a more vigorous power emerged from disasters or where hardships fostered a person’s wisdom. The likely key to turning adversities into blessings is that peril impels a person or nation to determination and greater efforts, and pain spurs them to make prudent plans. (The New Tang History)