It is not illegal to sell medicinal liquor for external use to massage parlors. It is certainly not illegal to open a regular shop and operate legally, and it is not illegal to use wine in massage shops.

In addition, it is beneficial to promote the external use of medicinal liquor and prevent accidental injury to customers. However, whether to allow the use of medicinal liquor requires massage shops to have relevant qualifications and policies, and medicinal liquor also needs to comply with relevant regulations and standards.

The above information is for reference only. If you have any questions or need more detailed information, it is recommended that you consult relevant local departments or professionals.