Guangzhou social security transferred to Dongguan.

First of all, you have to pay social security in Dongguan, and then go to Dongguan with the social security certificate when you leave your job in Guangzhou. If you don't have a social security certificate, you can consult the social security bureau in Dongguan to see if it can be reissued in Guangzhou, and then take all other documents with you, so that the social security you bought in Guangzhou can be merged into the social security account handed over by Dongguan.

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