At noon, the man the old man sent to buy medicine returned. When the old man retrieved the medicine, Jiang Xiaobai noticed two ingredients were missing.
"Why are there two missing?"
The old man said, "There's no way around it, in a small place, we can only get this much."
Taking medicine isn't the same as eating food. If you're eating, one dish is fine, and two dishes are also fine, but with medicine, if you're missing one ingredient, it just isn't right. Taking it haphazardly might actually kill someone.
"Then all these medicines are useless."
Jiang Xiaobai sighed, handed the medicine over to the old man, "Keep it for fueling the stove."
Su Yufei's condition was worsening; the cold medicine she took had no effect at all. Jiang Xiaobai was frantic, as Su Yufei's consciousness was already blurred, not responding to him when he spoke.
"This won't do. If we continue like this, there will be serious problems."