Vaccination

Yang Xiaodou glared at him. "That's better than waiting for death." Old Yang and the other family members hurriedly went up to pull him back. "Xiaodou, don't be silly. Put down the knife."

Old Yang asked his youngest son to hold his eldest son and apologized to the scribe. "Master Tu, don't lower yourself to this child's level. You said that Master Zhou's teacher has found a prescription and is looking for a medicinal primer. Are you really not lying to us?"

Scribe Tu raised his hand and said, "Brother, I swear I'm not lying to you. Be careful these few days. Take your medicine on time and don't interact with the people next door. There'll be news in six or seven days at most."

Seeing that the scribe had raised his hand and sworn, Old Yang believed him a little. "Lord Tu, don't worry. We will take the medicine on time and wait for the good news."