, 951. This life-size nude statue of Taejo was clothed and worshiped until the end of the Goryeo dynasty; the practice of clothing and worshiping nude statues originated in Goguryeo. The statue is wearing an imperial crown called a
tongcheongwan ().
Taejo of Goryeo founded Goryeo in 918 as a successor to Goguryeo. He adopted the era name of "Bestowed by Heaven". Taejo was acknowledged as the successor to Dongmyeong in China. Goryeo was acknowledged as the successor to Goguryeo in China and Japan. Taejo unified Korea and proclaimed the unification of the "
Samhan", or the Three Kingdoms of Korea. Goryeo monarchs were called emperors and Sons of Heaven. Imperial titles were used since the beginning of the dynasty; Taejo was called "Son of Heaven" by the
last king of Silla. Goryeo monarchs addressed imperial edicts and were addressed as "Your Imperial Majesty" (). They were posthumously bestowed with imperial
temple names. The use of imperial language was widespread and ubiquitous in Goryeo. Imperial titles and practices extended to members of the royal family. Members of the royal family were commonly invested as kings. Goryeo monarchs wore imperial yellow clothing. Goryeo's imperial system was modeled after that of the Tang dynasty. The government consisted of
three departments and six ministries and the military consisted of five armies.
Kaesong was an imperial capital and the
main palace was an imperial palace; Pyongyang and
Seoul were secondary capitals. Goryeo maintained a tributary system. The
Jurchens who later founded the
Jin dynasty viewed Goryeo as a parent country and Goryeo monarchs as suzerains. Goryeo monarchs were initially called "Emperor of Goryeo" by the Jin dynasty. The
Song dynasty, the
Liao dynasty, and the Jin dynasty were well aware of and tolerated Goryeo's imperial claims and practices. Goryeo had a pluralistic concept of
tianxia. The Goryeo
tianxia was one among others that constituted the world. During the 11th and part of the 12th centuries, a balance of power was maintained in East Asia between Goryeo, the Liao dynasty, the Song dynasty, and
Western Xia. Goryeo played an active role in East Asian politics. Goryeo monarchs were called kings vis-à-vis China; Goryeo successively maintained tributary relations with the
Five Dynasties (beginning with the
Later Tang dynasty), the Song dynasty, the Liao dynasty, and the Jin dynasty. However, Goryeo's tributary relations with them were nominal. Goryeo had no political, economic, or military obligations to China. According to Peter Yun: "While Goryeo may have admired and adopted many of China's culture and institutions, there is little evidence that it accepted the notion of Chinese political superiority as the natural order of things." Goryeo monarchs possessed full
de jure sovereignty. During the 11th and 12th centuries, Goryeo was assertive toward China. Goryeo treated imperial envoys from the Song, Liao, and Jin dynasties as equals, not superiors; imperial envoys were consistently downgraded. in the 11th century and again in the 13th century; only Sons of Heaven had the right to commission a Tripitaka. Goryeo used both a royal and an imperial system during its early and middle periods. Goryeo monarchs were not strictly
emperors at home and kings abroad: Goryeo's royal system was also used at home, and its imperial system was also used abroad. They were used almost indiscriminately. Goryeo's identity was not defined by its monarchs being kings or emperors but, instead, by them being Sons of Heaven. According to Remco E. Breuker: "The [Goryeo] ruler has been king, he has been emperor, and at times he was both. His correct appellation is not important, however, compared to the fact that he was considered to rule his own domain [
tianxia]; his own, not just politically and practically, but also ideologically and ontologically." Goryeo was an independent
tianxia; within it, Goryeo monarchs were Sons of Heaven, called "Son of Heaven of East of the Sea" (), who were viewed as superhuman beings who alone mediated between Heaven and the Korean people. The Goryeo
worldview partly originated during earlier periods of Korean history. It was possibly a continuation of the Goguryeo worldview. New elements were introduced during the Goryeo period. The Goryeo worldview was more influenced than was the Goguryeo worldview by
Confucianism. Confucianism was the main political ideology during the Goryeo period, but not during the Three Kingdoms period. According to Edward Y. J. Chung: "[Confucianism] played a subordinate role to the traditional ideas and institutions maintained by noble families and hereditary aristocrats, as well as by the Buddhist tradition." The Goryeo worldview was possibly influenced by Dongmyeong worship and
Balhae refugees: Dongmyeong was highly venerated and widely worshiped in Goryeo. He was the only one among the
progenitors of the Three Kingdoms of Korea who was honored with shrines; his tomb and shrine in Pyongyang were called the Real Pearl Tomb and the Shrine of Holy Emperor Dongmyeong. Balhae used imperial titles and era names. Taejo viewed Balhae as a kin country and accepted many refugees from it; Balhae refugees constituted 10 percent of the Goryeo population. Goryeo entered a
period of military dictatorship similar to a
shogunate in the late 12th century. During this period of
de facto military rule, Goryeo monarchs continued to be viewed as Sons of Heaven and emperors, and Goryeo continued to be viewed as a
tianxia. The view of Goryeo as a
tianxia inspired a spirit of resistance to the
Mongols in the 13th century. Goryeo capitulated to the Mongols after
30 years of war and later became a semiautonomous "
son-in-law state" () to the
Yuan dynasty in 1270. Goryeo's imperial system ended with
Wonjong of Goryeo. During this period of Mongol dominance, Goryeo monarchs were demoted to kings and temple names indicated loyalty to the Yuan dynasty. The
Songs of Emperors and Kings and
Memorabilia of the Three Kingdoms maintained the view of Goryeo as a
tianxia. However, the view of Goryeo as a
tianxia gradually declined. Goryeo ended its son-in-law status in 1356:
Gongmin of Goryeo recovered
Ssangseong and declared autonomy. Meanwhile,
Neo-Confucianism emerged as the dominant ideology; Confucianism profoundly influenced Korean thought, religion, socio-political systems, and ways of life for the first time in Korean history. The powerful influence of Neo-Confucianism in the twilight of the Goryeo dynasty led to a growing
Sinocentric view of Korea as a "little China". == Joseon ==