Beijing on Wednesday denounced the reintroduction of a United States bill that threatens closures of Hong Kong's Economic and Trade Offices (ETO) in the country.

A spokesperson for the Commissioner's Office of China's Foreign Ministry in the Hong Kong SAR said that the ETOs' role of promoting economic and trade cooperation between the city and the US should not be challenged, Xinhua news agency reported.

The office noted that the ETOs are official institutions representing the SAR in the US and that "the smearing attack" on these offices launched by certain US politicians disrupts day-to-day exchanges between the two sides.

These politicians should stop interfering in Hong Kong affairs, the spokesperson said, adding that any further moves in the wrong direction will be met with countermeasures.