To purchase legal medication in Chengdu, you should visit a pharmacy, known locally as a Yao Dian, which can be identified by a green cross symbol or a green and white sign. Major reputable chains such as Zhaiji Pharmacy and Tongrentang are located throughout the city, especially in busy commercial districts like Chunxi Road and near major hospitals. While basic items like pain relievers or cold medicine are available over-the-counter, more specialized medications and antibiotics typically require a prescription from a local Chinese hospital. It is helpful to have the name of the medicine written in Chinese characters or a photo of the packaging to show the staff, as English proficiency can vary. Please be aware that China has extremely strict laws regarding illegal narcotics, and the purchase or possession of illicit drugs carries severe criminal penalties.