China had already lodged "stern representations" with the United States about the Hong Kong-related bill and urged that it not be passed into law, Chinese Foreign Ministry spokesperson Geng Shuang said at a press briefing on Wednesday.
"China will take vigorous measures to firmly respond, to staunchly safeguard our sovereignty, security and development interests, in response to the wrong actions of the U.S. side," noted Geng, stressing that the most important issue facing Hong Kong is to stop violence and control chaos, as well as maintain the rule of law.
Geng made the comments after the chairman of the U.S. Senate Foreign Relations Committee said on Tuesday he wanted the Senate to pass legislation to support protesters in Hong Kong.