Can Hong Kong hukou buy social security in Shenzhen?

Yes, but you must work in the company and be paid by the company. According to the provisions of the Notice on Issues Related to Participation in Social Insurance by Personnel from Taiwan, Hong Kong and Macao in Deep Employment, the personnel from Taiwan, Hong Kong and Macao who have obtained the Employment Certificate for Personnel from Taiwan, Hong Kong and Macao have not reached the retirement age stipulated by the state and established labor relations with enterprises in our city.