Protests ` ` a very dangerous , obviously illegal activity , '' says Chen Zuo'er . Chen helped negotiate with the British government over the proposed transfer of power to China . Occupy Central has two pillars of economic prosperity and social stability , he says . `` It has caused great harm to Hong Kong in the past few days . Chen : ` ` One country , two systems '' is a fundamental national policy .
Protests ` ` a very dangerous , obviously illegal activity , '' says Chen Zuo'er . Chen helped negotiate with the British government over the proposed transfer of power to China . Occupy Central has two pillars of economic prosperity and social stability , he says . Chen : ` ` One country , two systems '' is a fundamental national policy .