Hangzhou and Shanghai have established medical insurance in different places, which can be used, but it can only be said so much. You can apply to Hangzhou Medical Insurance Center for medical treatment in different places. After the formalities take effect, you can go to the designated hospital or pharmacy and go back to Hangzhou to reimburse the medical expenses.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.