Most Chinese governments after the Han dynasty used civil service exams to select people for positions within the government. How did these exams contribute to the success and stability of China throughout the Middle Ages? The people who wanted government jobs took the exams as a formality-to make it seem that they were qualified for the job.
The people who could pass the tests generally had the knowledge and skills to fulfill their duties as goverment officials.
The people from wealthy, powerful families attended the best schools and therefore maintained their power in society.
The people who finished the test in the allotted time could be expected to work quickly to accomplish tasks.

Chinese civil service, the administrative system of the traditional Chinese government, the members of which were selected by a competitive examination. The Chinese civil service system gave the Chinese empire stability for more than 2,000 years and provided one of the major outlets for social mobility in Chinese society. It later served as a model for the civil service systems that developed in other Asian and Western countries.

The Qin dynasty (221–207 BCE) established the first centralized Chinese bureaucratic empire and thus created the need for an administrative system to staff it. Recruitment into the Qin bureaucracy was based on recommendations by local officials. This system was initially adopted by the succeeding Han dynasty (206 BCE–220 CE), but in 124 BCE, under the reign of the Han emperor Wudi, an imperial university was established to train and test officials in the techniques of Confucian government.

Explanation:

they both built pyramids.

the western roman empire flourished, but the eastern portion of the empire struggled.