Photo taken on June 12, 2019 shows roads after a riot in Admiralty area of Hong Kong, south China. (Xinhua)
The more the bottom line of national security is consolidated, the greater the space will be for Hong Kong to leverage its advantages under "one country, two systems," he stressed.
Zhang's remarks were echoed by people from all walks of life in Hong Kong.
Chow Man-kong, deputy director of the China Economic Research Program of Lingnan University, said the enactment and enforcement of national security laws will help Hong Kong out of the current predicament.
Despite efforts by successive HKSAR chief executives, the deep-seated problems in Hong Kong society have not yet been resolved due to obstruction by the opposition and external forces, he said. "Hong Kong cannot move forward if 'one country, two systems' is not consolidated."
In the eyes of Dan, an Australian who has been living in Hong Kong for nearly 22 years and operates a consulting business, the national security legislation is of paramount importance to Hong Kong at present.
"It is a fantastic opportunity to restore peace and order back to Hong Kong society," he said, adding that by creating a foundation of safety and trust "we can get on and start building a better and healthier future together."