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"Education on national security should start with the Constitution," said Wong Kam-leung, chairman of the Hong Kong Federation of Education Workers, noting that China's supreme law clearly lays out the requirement to protect national security and interests, safeguard the nation's unity and all ethnic groups' solidarity, and protect the country from invasion.

"During this period, data security has become a key issue related to national security and economic and social development," Wu added.

"Don't overemphasize the markets in the US and European Union. China needs to place more emphasis on other markets. For example, China's exports to India, Russia and Brazil account for about 7 to 8 percent of the country's total," Yu said.

"Despite government efforts to protect minority languages, these languages are in danger of disappearing due to modernization," said the retired civil servant, who works for the provincial ethnic affairs authority.

"DoD continues to be concerned about the negative impact on our key allies regarding the recommended options," Defense Secretary James Mattis said in a memo sent to the Commerce Department.