Can the social security bought in Nanhai, Foshan enter the household in Shunde?

Of course. According to Foshan's new household policy in 2023: full-time junior college degree or above, under 45 years old, who has paid social security for more than 6 months continuously in Foshan, can apply for household registration in Shunde District, Sanshui District and Gaoming District of Foshan, full-time undergraduate degree or above, under 45 years old, who has paid social security for 1 month continuously in Foshan, and can apply for household registration in Foshan.