What if I don't want to lend my medical insurance card to others?

According to national regulations, medical insurance cards are owned by individuals and cannot be lent to others. However, in real life, as long as it is not discovered, it can be used by others. But a word of caution: the money in the medical insurance card is your own, and your own money has been used by others. At that time, what would you do if you were sick and wanted to buy medicine?

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