The money in this passbook can be withdrawn in cash.
Is the medical insurance card a simple card or a financial card with a magnetic stripe head?
A simple card is just a proof that you have participated in medical insurance, with your medical insurance number on it.
Once you are ready to be hospitalized, show your medical insurance card, contact the social security center and prepare for reimbursement in the future.
If it is a financial card, there may be cash. You can go to the medical insurance pharmacy to buy medicine.