He was some kind of crazy altruist called by God to raise money and feed the starving children there.
Not choosing to flee China he evaded the Japanese occupiers for a time until they caught up with him and put him in a prison camp. When the Japanese Empire was defeated he was able to reconnect with his family and he was one of those skeleton people you see in the "horrors of war" pictorials.
No, he did not take the hint that maybe it was time to come home. He felt that China still needed his help so he stayed.
He had a few good years and then he got into trouble with the Communists and ended up in prison again.
He came back to the U.S.A. during the Korean War, exchanged for a few Chinese prisoners the U.S.A. had taken in Korea.
Sadly he turned to alcohol to deal with his PTSD and that's what eventually killed him.
I understand that sort of altruism but I'm not willing to go all the way. I never wear shoes I can't run away from trouble in ,and I've got a knife scar on my arm that reminds me of my own mortality and that the basic goodness of all people is buried far too deep in some for my efforts to expose.
Some people really do want to kill you.
Nevertheless, I'm not going to let my boundaries be dictated by fear.