Hong Kong, an international innovation and technology hub, is one of the close trade partners with Zhongshan. Since reform and opening-up especially Hong Kong's return to the motherland, the two places have strengthened exchanges in human resources, business trade, innovation and entrepreneurship, and etc.

Currently, there are about 2,300 Hong Kong-funded enterprises in Zhongshan, accounting for more than 50% of the total number of foreign-funded enterprises, with a total investment of over 17 billion US dollars. In addition to such traditional industries as clothing, furniture and lighting, Hong Kong investors are also tapping into such fields as next-generation information technology, healthcare and medicine and high-end equipment manufacturing.

Statistics show that in 2021, there were 243 newly-established enterprises directly invested by Hong Kong investors in Zhongshan, with an actual investment of 3.3 billion yuan, accounting for nearly 90% of the total foreign investment absorbed, hitting a record high.