The implementation of the national security law for Hong Kong will certainly "cut off" the "black hands" of the Democratic Progressive Party in Taiwan for messing up Hong Kong affairs, a mainland spokeswoman said on Tuesday.

The remarks came after the DPP authorities' remarks over the national security law for Hong Kong, which was unanimously passed on Tuesday during the 20th session of the 13th Standing Committee of the National People's Congress, China's top legislature.

DPP authorities on Tuesday said the law violated democracy and human rights in Hong Kong and that the island will offer so-called "humanitarian aid" plan to rioters escaping from Hong Kong .

Zhu Fenglian, a spokeswoman for the State Council Taiwan Affairs Office, voiced support for the implementation of the national security law for Hong Kong.

The law aims to safeguard China's sovereignty, security and development interests, and ensure the steady and sustainable development of "one country, two systems" and Hong Kong's prosperity and stability, Zhu said.

The DPP authorities' remarks against the law blatantly distorted the facts and attempted to continue to associate with the rioters in Hong Kong and endanger national security, she said.

"It once again exposed their sinister intentions of plotting to meddle in Hong Kong affairs, destabilize Hong Kong and seek 'Taiwan independence'," she added.

It clearly stipulates the constitution of four categories of crimes that seriously endanger national security and the penalties for them, Zhu said.

"It will surely cut off the 'black hands' of the DPP to mess up Hong Kong," she added.

The spokeswoman sternly warned DPP authorities, saying, "Any attempt by any person or force to undermine China's sovereignty, security and development interests and undermine Hong Kong's prosperity and stability is futile and will inevitably backfire."