Reforms of the Heungseon Daewongun
When Gojong took the throne at twelve, his father the Daewongun seized power and attacked the abuses of in-law government, seeking to strengthen the crown and relieve the people.

Hulbert, Homer B. · Public domain · Source
When Cheoljong died without an heir in 1863, the second son of Yi Ha-eung, Prince Heungseon, became king. The Daewongun drove out the Andong Kim in-law clan and appointed men by ability. He curtailed and in 1865 abolished the Border Defence Council (Bibyeonsa), returning politics to the State Council and military affairs to the Samgunbu, and compiled the Daejeon hoetong (1865) and Yukjeon jorye law codes. He rebuilt Gyeongbokgung to restore royal prestige.
He also attacked the corruption of the three taxes: surveying hidden land, making yangban households pay the military cloth tax (hopoje, 1871), and replacing the abused state grain loans with village-run granaries (sachangje). In 1871 he closed all but 47 of the seowon academies that had become bases of factionalism.
The reforms were popular with commoners, but forced contributions and debased coins for the palace and the closing of the academies angered the yangban. Abroad he refused trade and diplomatic ties with the West. After Choe Ik-hyeon’s memorial of impeachment in 1873, Gojong began to rule in person and the Daewongun withdrew.

