During the reign of King Injong of Goryeo, royal authority had significantly weakened following the Rebellion of Yi Ja-gyeom, leading to an unprecedented concentration of power in the hands of the aristocratic clans centered in Gaegyeong (the capital). These Gaegyeong elites advocated for a policy of subservience to the Jin Dynasty, prioritizing stability and their own vested interests over national assertiveness, thereby hindering the nation's sovereignty and vitality. In contrast, a faction based in Seogyeong (modern-day Pyongyang), including the monk Myocheong and the official Jeong Ji-sang, criticized the corruption and perceived incompetence of the Gaegyeong aristocracy. They sought a new political direction. Leveraging the principles of geomancy (pungsu-jiri), Myocheong and his followers argued that the geomantic energy of Gaegyeong had waned, necessitating a relocation of the capital to Seogyeong. Seogyeong, as the ancient capital of Goguryeo, symbolized a spirit of northern expansion and national independence. This faction envisioned conquering the Jin Dynasty and establishing a truly sovereign state. King Injong, initially swayed by their arguments, even began preparations for the transfer of the capital. In 1135 (the 13th year of Injong's reign), Myocheong, Jeong Ji-sang, Baek Su-han, and others constructed the Daehwagung Palace in Seogyeong, intending it as the new royal residence. However, strong opposition from conservative forces in Gaegyeong, led by Kim Bu-sik, thwarted the capital relocation plan. In response, Myocheong and his allies declared the establishment of the 'Great Wi State' (Dae Wi-guk) in Seogyeong and launched a rebellion. Myocheong proclaimed his forces the 'Heavenly-Sent Righteous Army' (Cheongyeonchung-uigun), advocating for the conquest of Jin and the overthrow of the Gaegyeong faction. King Injong appointed Kim Bu-sik as the supreme commander to suppress the revolt. Kim Bu-sik's Goryeo army besieged Seogyeong, leading to fierce battles. Initially, Myocheong's forces achieved some success, but the tide gradually turned against them. Ultimately, in 1136, Seogyeong fell to Kim Bu-sik's forces, and Myocheong's rebellion was crushed. Jeong Ji-sang and other key figures were executed by Kim Bu-sik. Myocheong's Movement to Move the Capital to Seogyeong vividly exposed the deep-seated conflict within Goryeo society between the conservative aristocratic faction (Gaegyeong faction) and the progressive, independent-minded forces (Seogyeong faction). The suppression of the rebellion significantly strengthened the power of the Gaegyeong aristocracy, particularly Kim Bu-sik, and solidified Goryeo's policy of subservience to the Jin Dynasty. Conversely, the political influence of the Seogyeong faction waned considerably, and the spirit of northern expansion was effectively stifled. This event is also considered one of the underlying causes that contributed to the later Military Rule (Musin Jeongbyeon). The renowned historian Shin Chae-ho famously described it as 'the greatest event in a thousand years of Korean history,' interpreting it as a clash between an independent, traditional ideology and a subservient, Confucian ideology. The rebellion profoundly impacted Goryeo's foreign policy direction and its internal power structure for decades to come.