Are the social security networks in Beijing and Nanjing connected?

At present, social security in China is not connected to the Internet. If you paid five insurances in Beijing before, you have to change back to Wuhan's old-age insurance. Other insurance can't be transferred, and of course you can't enjoy it. We suggest that friends who work in other places, if they don't want to settle down and live in large-scale construction sites for a long time in the future, had better invest in social security at the place where they register (that is, the place where they settle down in the future). This situation is very common now.