text:  Why Dr. Gu feels so appreciative of him is that actually he saved Dr. Gu's life. He saved his life. That's right. Yeah. If we go back to the book, you know, Dr. Gu was in a lineup. He was about to be shot by a firing squad. And Dr. Yang pointed him out to the Japanese soldier and said, no, no, no, we got to save this man. You can't shoot him. And it's really actually based on a true story about my own grandfather. Yeah. My grandfather was rounded up.