What insurance should I buy for traveling abroad 15 days?

Hello, you can buy an overseas travel insurance for short-term travel abroad. To purchase overseas travel insurance, you need to choose appropriate overseas travel insurance products according to your actual tourist areas. If you are going to Schengen countries, the overseas travel insurance you buy must meet the requirements of the European Schengen visa, otherwise the visa will not pass. Here is a reference link for you: (Overseas Travel Insurance)

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