1, Germination (Warring States): Shang Yang established the county system, which was established from the feudal bureaucratic system of sovereign decrees.

2. Establishment (Qin Dynasty): The establishment of the feudal monarchy centralized political system. Establish an imperial system with the supremacy of imperial power, a central official system and a local county system.

3. Consolidation (Western Han Dynasty): ① Emperor Jing of the Han Dynasty "cut the vassal" to pacify the Three Chaos in Seven Countries. (2) Emperor Wu of the Han Dynasty issued an "Enzhi" to remove the title of vassal and solve the problem of the kingdom. (3) "To oust a hundred schools of thought and respect Confucianism alone" strengthened ideological autocracy and consolidated autocratic centralization.

4. Perfection (Sui and Tang Dynasties): ① There are six departments in three provinces, and the governors of the three provinces are equivalent to the prime ministers, which contain and restrict each other, avoiding the autocratic power of the prime ministers and curbing the autocratic monarchy to a certain extent, which is a further improvement of the autocratic centralization. (2) The imperial examination system allows people from humble backgrounds to participate in political power and expand the foundation of the ruling class.

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5. Strengthening (Northern Song Dynasty): Taking the right of "drinking poison to quench thirst", the local administrative, military and financial powers were centralized, which prevented the emergence of local separatist regimes and strengthened centralization.

6. Development (Yuan Dynasty): The establishment of the Central Secretariat Province, as the highest administrative body in China, ensured the implementation of the central unified government decrees. The establishment of "provinces" and the implementation of the provincial system will also have a far-reaching impact on the future.

7. Aggravated decline (Ming and Qing Dynasties): The Ming Dynasty abolished the prime minister and produced absolute monarchy. At the local level, the establishment of three departments to further weaken local power, the establishment of factories and health secret service agencies in various places, and the implementation of stereotyped writing are outstanding manifestations of the strengthening of absolutism. The Qing dynasty followed the Ming system, and then added the Ministry of War, which strengthened the imperial power unprecedentedly, forming an extreme monarchy, and the autocratic centralization system reached its peak.