Very simple. Share your thoughts and opinions on how Chinese society may have developed had there never been an Imperial civil service examination system. What might be the effects on politics, society, or economics, or any other field?
This is impossible to answer without knowing what they had instead.
China never developed a real aristocracy because of the Civil Service examinations. You'd see more localism, instability and other events because of the lack of Civil Service exams. It would also have, for better or for worse, interfered with the continuity of Chinese civilization.