Question: Hong Kong Macau cultural exchange was a trip that tested which law who's purpose was to fulfil Article 23 of the Macau Basic Law?
Sentence (from "Macau national security law"): The Macau's national security law (, Portuguese: Lei relative à defesa da segurança do Estado) is a law in Macau which prohibits and punishes acts of "treason, secession, and subversion" against the Central government, as well as "preparatory acts" leading to any of the three acts.
Relevant evidence: Yes