Manbao fell silent, and the Old Madam looked earnestly at Imperial Doctor Zheng and others.
Imperial Doctor Zheng lightly coughed and softly explained, "This business of blood transfusion is indeed recorded in some books, but, regardless of the person receiving or providing blood, the number of deaths is quite high, so..."
When Manbao saw everyone's faces change, she immediately explained, "That's because those people didn't differentiate blood types, and how could they draw blood from just one person's body? With so many people in the world, there are only a few types of blood. Just gather blood from several people."
"How does Doctor Zhou Junior know that the world's blood is divided into only a few types? Isn't all blood the same? How can you differentiate it?"
"Is now the time to discuss this? Aren't we talking about blood transfusion?"
