This would clearly mean the end of any free, democratic order because Hong Kong would no longer be in control of its laws. It would be the end of the Basic Law in Hong Kong and the beginning of total terror, to which the people in Tibet and Xinjiang (where, according to estimates, up to two million people are already crammed into concentration camps) are already exposed.
This is the fate that Hong Kong is facing: To degenerate into a large open-air prison like Xinjiang. The Hong Kong people are protesting this impressively and they now need the support of the whole world. The fear is real, Xinjiang proves it.
“One country, two systems” was also the slogan used to convince Taiwan to join the People’s Republic. The Republic of China on Taiwan is actually legitimate China: The military of this republic was defeated in 1949 by the rebels under Mao Zedong and withdrew to the island of Taiwan.
President Xi also became very unfriendly to the Taiwanese recently ― to put it mildly: after the threat of war against the island in January of this year, Western countries, including Germany, called on the Chinese ruler to use moderation.
Taiwan, on the other hand, has long since ceased to believe that it can cooperate with China in a way that would preserve Taiwan’s unique character. The country is, and wants to remain, a parliamentary democracy. The “sunflower” movement in Taiwan had greater success with China because of the country’s independence. None of the students who led the island’s protest against China in 2014 ended up in prison. Instead, they now work in parliament or have studied at elite universities such as Oxford or the London School of Economics.