Macao: 1887 The Sino-Portuguese Treaty of Friendship and Trade signed by the Qing court, which is an unequal treaty, stipulates that Macao will be "permanently administered" by Portugal.
Thus, China gradually degenerated into a semi-feudal and semi-colonial society, showing the decay of the rulers at that time and the gap between China and the West. It also shows the inevitability that the bourgeoisie is more advanced than the feudal society, and shows that the advanced relations of production will inevitably overcome the backward relations of production.