Go find Yu Rensheng, Bitang and upstairs. The price of the upstairs shop is relatively low. Just buy a real one for 500 yuan. Basically, it will be found in big shopping malls. Never go to those big pharmacies or other shops outside. If you are really free and someone knows the goods, go to the seafood street in Central. There is a wholesale market for medicinal materials, but 500 yuan is needed.

Hong Kong goods purchasing, you can add Q2223099640 if necessary.