Yang Bo said his mother had hung up the phone after saying a few words, tears streaming down his face like broken threads. His father had liver cancer, and the family couldn't afford the high cost of treatment, so they could only stay at home.,Yang Bo inquired about the cost of liver cancer treatment. The first year would cost 500,000 yuan, and the second year would cost 350,000 yuan. This means that to cure his father's illness, he would need a total of 850,000 yuan. For him, this is an astronomical sum!,Yang Bo suddenly heard a voice from the roadside. He turned his head to look and saw an old man, ragged and leaning against the steps, his forehead covered in sweat!。