

^ Comprehensive Institutions 通典( Tongdian).^ Rhymed Chronicles of Sovereigns 帝王韻紀( Jewang ungi).^ Old records of Silla 新羅古記( Silla gogi).Portrayed by Im Hyuk in the 2006-2007 KBS TV series Dae Jo Yeong.Taejo of Goryeo gladly took them in and the Dae family continued on and still survives to this day as the Hyeop-gye Tae clan (협계 태씨). After most population of Balhae was moved to Khitan by Liao Dynasty, the last princes of Balhae quickly gathered the Balhae Aristocracy and retreated to Goryeo for sanctuary. Though Balhae fell, it left a further legacy. Nevertheless, his descendants continued on the Balhae Royal line to the fifteenth generation. Despite all of his hard work, most people remember his son Dae Joyeong as the founder of Balhae. Legacy ĭae Jung-sang's forgotten establishing of a Successor-state of Goguryeo laid the foundations for the founding of an even more powerful kingdom, which was Balhae. Dae Jung-sang had another son, Dae Ya-bal (대야발), and probably also had other children besides Dae Jo-yeong because the Balhae Royal line consisted of two lineages, one from Dae Jo-yeong and the other from Dae Ya-bal. The most notable and famous of his children was his eldest, Dae Jo-yeong. Dae Jung-sang died from sickness after the battle. Geolsa died in Battle of Tianmenling, Dae Jo-yeong led the others in victorious against Li.

Geolsa Biu refused the title and Wu sent general Li Kaigu to suppress the rebellions. Īccording to New Book of Tang, Wu Zetian created Dae as Duke of Jin (Zhen), Geolsa Biu as Duke of Heo (Xu), and pardon their crimes. The people of Goguryeo were subject to diplomatic power and voluntarily recognized him as their leader. The state was created by the leader of the Mohe people, who subjugated the neighboring tribes both by diplomatic and military force. Both Geolsa Biu, and Dae Jung-sang died in battle, but Dae Jo-yeong led the remaining Goguryeo and Malgal soldiers and defeated the Tang army at the Battle of Cheonmun-ryeong and established the Balhae.

The two leaders resisted the Tang's attack, but were forced to retreat. Dae Jung-sang allied with the Baishan Mohe leader Geolsa Biu ( Hangul: 걸사비우, Hanja: 乞四比羽 pinyin: Qǐsì bǐyǔ), and the two powers opposed the Tang influence in 698. In 696, the Khitan led a revolt that killed the cruel governor of the protectorate and gave Yingzhou back to the Khitan. Yingzhou became part of the Tang's General Protectorate to Pacify the East, and the Khitan were enraged. Most of the Goguryeo Aristocracy, including him, were taken to Yingzhou ( Hanzi :營州), the homeland of the Khitan. The Old Book of Tang state that his eldest son, Dae Jo-yeong, was a former Goguryeo general or chief of Sumo Mohe.
