Cheoljong of Joseon vs Hyojong of Joseon

Cheoljong, a distant royal relative living in poverty on Ganghwa Island, was chosen as king by the Andong Kim clan. He was ill-prepared for rule and remained a figurehead, with the clan controlling all state affairs.

Under Cheoljong, the Andong Kim clan monopolized power, filling key positions with their members. Corruption and factionalism intensified, leading to administrative paralysis. The king had no real authority and was largely ignored.

The Pungyang Jo clan, led by Queen Sinjeong, began to challenge the Andong Kim clan's dominance. This factional struggle further destabilized the court. Cheoljong remained a passive observer as the two clans vied for control.

King Cheoljong died at age 32, likely from illness. He left no heir, ending the line of King Yeongjo. His death led to the selection of Gojong as the next king, with the Pungyang Jo clan gaining power and eventually leading to the regency of Heungseon Daewongun.

King Hyojong initiated a plan to invade Qing China to avenge the humiliation of the 1636 surrender. He expanded the army, built fortifications, and stockpiled weapons. The plan was never executed due to Qing power and lack of allies.

Hyojong strengthened the Joseon military by reorganizing the army, improving artillery, and fortifying northern borders. He also promoted the use of matchlock muskets and trained a standing army, preparing for a potential war with Qing.

King Hyojong died suddenly at age 40, possibly from illness or poisoning. His death ended the Northern Expedition plan. His successor Hyeonjong was young, leading to a power vacuum and intensified factional strife.