The Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region on Saturday strongly condemned the U.S. government for smearing Hong Kong's business environment and imposing so-called sanctions on officials of the office.

Aerial photo taken on June 27, 2017 shows the view of Hong Kong, China. (Xinhua/Lui Siu Wai)

The liaison office, in a statement, called the sanctions "a piece of waste paper" and said the "boring political performance" and hegemonic acts are doomed to fail.

The U.S. move seriously damaged international laws and basic norms governing international relations, and posed a blatant challenge to the Chinese government and people, the liaison office said.

The U.S. government on Friday issued a so-called "advisory" to U.S. businesses and individuals operating in Hong Kong and imposed sanctions on a number of officials of the liaison office.