What is the difference between Shanghai social security four gold and five insurance and one gold? Which is better?

The four gold, five insurance and one gold you mentioned are actually the same, that is, Shanghai urban social insurance, referred to as social security. For an individual, it is four gold, and for the unit, it is five insurances and one gold.

The so-called five insurances and one gold are: endowment insurance, medical insurance, unemployment insurance, work injury insurance, maternity insurance and provident fund. For the unit, it is necessary to pay these five insurances and one gold for each employee, but four of them also need to be paid by individuals, namely, pension, medical care, unemployment insurance and provident fund, referred to as four gold.

So four gold is five insurances and one gold.