What is the relationship between Shenzhen Xinhe Group and Hong Kong Xinhe Group?

This is a completely different group with the same name.

1) Xinhe Group is one of the major real estate developers in Hong Kong, with a wide range of business, consisting of three listed companies in Hong Kong and several private holding companies of the Huang family. The three listed companies are:

2) Shenzhen Xinhe (Group) Co., Ltd. was established with the approval of Shenzhen Municipal People's Government at the beginning of 1995. Its business development covers housing, office building, commercial property, comprehensive land planning and development, property management, department store retail and other fields. It is one of the powerful comprehensive large-scale Sino-foreign joint ventures in Shenzhen. After more than ten years of development, Xinhe Group has now become a comprehensive group in many fields, and has made remarkable achievements in real estate development, property management, department store retail and other fields.