Aside from a few commonly known herbs, who would dare to mix and decoct medicinal materials without a prescription from a professional Chinese medicine pharmacist, unsure of which ingredients combined could produce what effects or treat what ailments?
Chinese medicine is such; reckless mixing of prescriptions could very likely turn a good medicine into poison, or poison into deadly toxin.
Even due to improper storage, the properties of herbs might change.
And the efficacy of the medicine can increase or decrease to various extents when different herbs are decocted together.
In the past, people wanting to take Chinese medicine could simply buy books with herbal prescriptions online.
But where could the survivors now go online?
Even if they could connect to the internet and buy books using the Universal Signal Connectors sold by Hua Mi, who would ship the orders on the other end?