It seems that the Government of China truly want to govern the area of Hong Kong.
Of course the area of Hong Kong has been the land of China originally. England had have the war against China, and England won.
As a result England had gotton the area of Hong Kong during about 100 years. Hong Kong is the problem of Chinese people, and so it is not correct that other countries say many opinions against the action of China.
It is difficcult that China has two systems in one nation. Hong Kong will lose the democratic system soon or later.
Hong Kong has the important role of money for China and the world. Hong Kong will lose the role in the future, but independence of Hong Kong is a more important issue for the Chinese Government.