"Ding Guo" has seen how difficult the world is and has become accustomed to the dangers of the world. Whether he likes good or evil, he just wants to find the answer to the world. It doesn't matter if it's worth it or not, just because only he can do it. Feeling sorry for the dead, but unable to do anything about it.
"Doctors" don't mention the human heart. Good and bad people are just patients. Whether they are worthy or not has nothing to do with the world. It is just their duty. For those patients who are incurable, he can only watch the patients die in the end. He is powerless and helpless.
Intention: If you are given two choices, sacrifice yourself to save everyone, or choose to live and sacrifice everyone. What choice will you make?