Ancestral secret recipe "cures all diseases" and various "miraculous medicines" are sold on second-hand trading platforms. The "Three Nos" medicine claims that babies can also use secret recipes passed down from ancestors to "cure all diseases".

The anti-cancer drugs are all in foreign languages. Most drug transactions on second hand trading platforms not only fail to guarantee quality, but also cannot guarantee that the name and content of the drug are consistent. This poses a huge safety risk and must be banned from sale.