In the first four months of 2019, the investment from Hong Kong and Macao accounted for over 70% of Zhongshan's foreign investment in actual use, according to the Zhongshan Bureau of Commerce.

So far Zhongshan has over 4,300 foreign-invested enterprises, more than 2,400 of which are Hong Kong-invested enterprises, accounting for 55.8%. With a total investment of $26 billion, these companies cover a variety of areas including manufacturing, information and finance, among others and become an important power in the city's economic and social development. 

Presently, the Zhongshan government has established cooperation with universities and colleges in Hong Kong and Macao mainly in the health care and medicine industry. Besides, Hong Kong and Zhongshan have reached a preliminary agreement on co-building a national bio-pharmaceutical sci-tech innovation zone, which is expected to develop into a world-class bio-pharmaceutical R&D cluster district, an international bio-pharmaceutical industrial base, a world-leading high-end medical technology service cluster district, a deepened collaborative innovation demonstration base, and an global top exchange platform for the health care sector.