Why did Joseon/Choson kings often have to struggle to see their orders carried out in spite of their position as “absolute monarchs

Reread the section “Kings and Yangban Confucian Officials” on pages 249 to 251. Why did Joseon/Choson kings often have to struggle to see their orders carried out in spite of their position as “absolute monarchs”? How was the Korean bureaucracy different from the Chinese system? Do you think this was good or bad for Korea?