What stories have you heard or seen that made you cry in an instant?

I was in the sixth grade in the year of Wenchuan earthquake. I am lucky to be alive, and many of my classmates are gone. Now I'm in college. Every time I go home to see my deceased classmates' parents, they hold me and look at me from top to bottom. The most repeated sentence in my mouth is "all grown up". Later, when I remembered it, I wanted to cry. It was really hard to think that their white-haired people sent black-haired people. Thank you for being alive.