Shenzhen has paid social security for four years and can renew it, but people work in Wuhan. Is it necessary to transfer back to Wuhan?

It needs to be transferred back to Wuhan, because social security belongs to local finance. If you are in Wuhan for a long time and need social security, Wuhan will not bear you extra from their limited local finance. Generally speaking, Shenzhen will not willingly transfer money to Wuhan, which will be all kinds of difficulties. So it is better to take the initiative to transfer to Wuhan as soon as possible.