Seven:

The first research topic: the origin of China civilization.

The second research topic: the emergence of the state and social changes.

The third research topic: building a unified country.

The fourth research topic: separation of political power and national integration.

The fifth study theme: China ancient culture (1)

Seven times:

The sixth research topic: a prosperous and open society

The seventh research topic: the development of ethnic relations and the southward shift of economic center of gravity.

The eighth research topic: the consolidation and development of a unified multi-ethnic country

The Ninth Learning Theme: China Ancient Culture (Part Two)

Eight:

The first research topic: the invasion of foreign forces and the struggle of China people.

The second study theme: the beginning of modernization

The third research topic: the rise of the new democratic revolution.

The fourth study theme: War of Resistance against Japanese Aggression of the Chinese nation.

The fifth study theme: the victory of the people's liberation war

The sixth research topic: economic and social life

The seventh study theme: science and technology and ideology and culture

Eight times:

The first research topic: the establishment and consolidation of People's Republic of China (PRC).

The second research topic: the initial exploration and tortuous development of the socialist road

The third study theme: building socialism with China characteristics.

The fourth study theme: national unity and the reunification of the motherland

The fifth study theme: national defense construction and diplomatic achievements

The sixth research topic: science and technology, education and culture

The seventh study theme: social life

Nine:

[Ancient World History]

The first research topic: prehistoric humans

The second research topic: ancient Asian-African civilization

The third research topic: ancient European civilization

The fourth study theme: the blending of ancient civilizations.

The fifth study theme is ancient science and technology and ideology and culture.

[Modern World History (1)]

The first research topic: the great changes and colonial expansion of European and American countries.

The second research topic: industrial revolution

The third research topic: the consolidation and expansion of bourgeois rule

The fourth research topic: the international workers' movement and the birth of Marxism

Nine times:

[Modern World History (II)]

The fifth study theme: World War I.

The sixth study theme: modern science and ideology and culture

Modern history of the world

The first research topic: Soviet Union's exploration of socialist road.

The second research topic: the western world under the Versailles-Washington system.

The third study theme: World War II.

The fourth research topic: the formation and collapse of the bipolar pattern

The fifth research topic: the independence and revitalization of Asian, African and Latin American countries

The sixth learning theme: the evolution of the contemporary world pattern

The seventh study theme: modern science and technology and culture