chapter 23 This is the root cause ===

"Dr.Shadboult, Mr. Zhou was a soldier when he was young. During the Vietnam War, he was unfortunately hit by an artillery bomb. Although he was treated in time and saved his life, the medical technology at that time was not as good as it is now, and some of the scars were still left in the body. shrapnel."

"Then the root of the disease came down."

"It was fine when I was young, but as I grew older, my body function declined and old diseases recurred. Now I am in critical...