Previously, some places explicitly encouraged community residents to "help each other in the neighborhood and enjoy the leftover medicine" to minimize the risk of drug shortage for some residents. Now returnees bring the rest of the medicine back to the countryside, which can be said to be an expanded version of this "* * *" model. Of course, even without the initiative and encouragement of the public sector, this cross-regional "migration" of drug resources is actually spontaneous. This is also the embodiment of folk wisdom and social consciousness of mutual help and assistance under special circumstances.

However, drugs are special goods after all, and a prerequisite for effective "enjoyment" is to ensure standardized safety and avoid risk exposure. It should be noted that "enjoying the residual medicine * * *" is mainly from the perspective of the sharer, that is, what medicine is generally supported at home, which means that the actual situation of different recipients is often ignored. Therefore, it is necessary for residents in need to read the drug instructions carefully before taking the drug, and understand the indications and contraindications of the drug, as well as the dosage and administration method of the drug. Especially for some elderly people and children with basic diseases, medication should be cautious.

Some experts pointed out that it is best to enjoy "residual drugs" only over-the-counter drugs, and be cautious about prescription drugs. In this regard, local health departments and medical institutions can organize and coordinate the strength of family doctors or medical professionals, guide villagers to use drugs safely, and avoid "rushing to see a doctor". It is worth noting that after the number of infected people increased in COVID-19, drug safety has been concerned. Especially in rural areas, the relative lack of drug safety awareness and symptomatic drugs may lead to the prevalence of folk remedies.

Of course, drug safety problems did not only occur in the COVID-19 era. The theme of World Patient Safety Day in 2022 is "Drug Safety" and the slogan is "Avoid Drug Injury". Recently, a local member of CPPCC pointed out that "after the public was infected in COVID-19, irrational drug use increased significantly, and the risk of drug-induced injury of patients increased significantly." In China, especially in grass-roots and rural areas, irrational and irregular drug use by the public is more prominent, such as abuse of antibacterial drugs and analgesic drugs, improper selection and irregular use of cardiovascular and cerebrovascular drugs, drugs with similar appearance and pronunciation, and drug harm caused by confusion of drugs of various specifications. Therefore, it is of great significance to publicize rational drug use and popularize the knowledge of safe drug use to the public.