The liaison office of the Chinese central government in the Hong Kong Special Administrative Region (HKSAR) issued a statement Thursday expressing the utmost indignation and condemnation against the US signing the so-called Hong Kong Human Rights and Democracy Act of 2019 into law.

Ignoring stern representation and strong opposition from the Chinese side, the US side has now signed the act into law. It is a gross interference in the Hong Kong affairs, which are China's internal affairs, the office said in the statement.

"The purpose of the act is to disrupt Hong Kong and use it to contain China's development," the statement said. "We express our utmost indignation and condemnation over the series of acts of bullying by the United States."

The statement said the US politicians' intention was to bolster the masterminds behind the chaos in Hong Kong and those extreme radicals and rioters attempting to disrupt Hong Kong and antagonize China, add fuel to the flames of violence and destroy Hong Kong.

"Their vicious plot has been exposed," it said.