China

People should read Principles of Communism by Engels, section 18:

(i) Limitation of private property through progressive taxation, heavy inheritance taxes, abolition of inheritance through collateral lines (brothers, nephews, etc.) forced loans, etc.

(ii) Gradual expropriation of landowners, industrialists, railroad magnates and shipowners, partly through competition by state industry, partly directly through compensation in the form of bonds.

(iii) Confiscation of the possessions of all emigrants and rebels against the majority of the people.

(iv) Organization of labor or employment of proletarians on publicly owned land, in factories and workshops, with competition among the workers being abolished and with the factory owners, in so far as they still exist, being obliged to pay the same high wages as those paid by the state.

(v) An equal obligation on all members of society to work until such time as private property has been completely abolished. Formation of industrial armies, especially for agriculture.

(vi) Centralization of money and credit in the hands of the state through a national bank with state capital, and the suppression of all private banks and bankers.

(vii) Increase in the number of national factories, workshops, railroads, ships; bringing new lands into cultivation and improvement of land already under cultivation – all in proportion to the growth of the capital and labor force at the disposal of the nation.

(viii) Education of all children, from the moment they can leave their mother’s care, in national establishments at national cost. Education and production together.

(ix) Construction, on public lands, of great palaces as communal dwellings for associated groups of citizens engaged in both industry and agriculture and combining in their way of life the advantages of urban and rural conditions while avoiding the one-sidedness and drawbacks of each.

(x) Destruction of all unhealthy and jerry-built dwellings in urban districts.

(xi) Equal inheritance rights for children born in and out of wedlock.

(xii) Concentration of all means of transportation in the hands of the nation.

The idea of using the state in order to gradually get rid of capital and re-organize the capitalist economy into the socialist economy is right at the beginning of Marx and Engels writings. The reason for this is that people won't become all socialists on the day one after the revolution, and the social fabric of the society need to change gradually in order to abolish private property. They reached this conclusion using dialectics, because in order to change social thinking you need to first understand the reality you are in, propose a change, and after the change is done, you need to re-assess reality. It's a scientific process based on learning, proposing and adapting things. So the migration to socialism does not occur overnight and does not occur in a straightforward way.