Does overall planning mean overall planning for the aged? Are social security and overall planning the same thing? What kind of money does the company send?

Social security is usually what we call five insurances. Old-age overall planning means that part of the amount of old-age insurance paid by individuals and units does not enter the personal account, but enters the account designated by the state. When someone retires, a pension is to withdraw money from an account in this country. The big account of this country is the social pension fund. Whoever retires first will use the money in this account first. To put it bluntly, it is to lend the money paid by employees to retirees for old-age care.

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