"真正考验一个战士的不是他在舒适时的表现，而是他在逆境中的反应。"

Simplified Meaning:

When things are going well, it's easy for people to show their best side. However, the real measure of a person's strength and character is how they handle difficult situations. For example, imagine a student who always gets good grades when the subjects are easy. But if that student faces a challenging exam and still works hard and stays positive, this shows their true dedication and resilience. In life, we all face tough times like losing a job, dealing with illness, or facing personal problems. It's during these moments that our true character comes out. A person who stays calm, finds solutions, and helps others despite their own struggles is showing real bravery and strength. To apply this to your life, remember to stay strong and positive when you face difficulties. How you react in tough times will show your true character.