What qualified a citizen in the han dynasty to hold a government job?

What qualified a Han dynasty citizen to hold a government post was the holding of a public contest.

Explanation:

The Hans then instituted a public examination service based on written examinations. Anyone who wanted a government office would be tested on the Chinese government laws that were based on Confucius' thoughts. Soon, scholars became the Chinese upper class. Most of them owned land. Farmers and peasants could theoretically become government officials, but this rarely happened because most of them did not have the financial resources to devote themselves to the studies required to pass the competitions.

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i think it was   tsar alexander ii