To cooperate with the US and Europe, all mainland Chinese companies have to run an office in Hong Kong. All money goes through Hong Kong and is controlled by Anglo-Saxon banks and elites. The gold and jewellery trades remain in their hands as before. This is what China disagrees with.
Hong Kong youth shout what others put in their heads. Protesters are already using Molotov cocktails. As soon as China applies force, the West will introduce sanctions. The UK is behind the protests in Hong Kong. China is in the spiderweb of the British empire.
No one will allow China with its present, pro-Russian, political position to develop. Over the years [the West] was preparing China for war with Russia and pumped China with competences and new industries. However, when Beijing refused to wage war against Russia, it was told: “Alright, then we will deal with you”.