China is adamant in reining in Hong Kong by imposing a national security law to prohibit challenges to its authority, according to a China think tank advisor, but pro-democracy activists remain hopeful that foreign intervention can force China's hand and salvage the liberal city's freedoms.Lau Siu-kai, vice president of the Chinese Association of Hong Kong and Macau Studies, said China was misunderstood by foreign countries to have relinquished control over Hong Kong under the "one country, two systems" policy."Hong Kong is part of China," Lau told Kyodo News. "China has not given up its po…READ FULL ARTICLE