Old Book of Tang: Li Ji defeated Goguryeo and took Pyongyang Fortress, captured King Bojang and Yeon Namgeon, and established the Protectorate…
Li Ji defeated Goguryeo and took Pyongyang Fortress, captured King Bojang and Yeon Namgeon, and established the Protectorate General to Pacify the East.
九月癸巳，司空、英國公勣破高麗，拔平壤城，擒其王高藏及其大臣男建等以歸。
Location: 舊唐書 卷5 總章1年 9月
When Silla's army surrounded Pyongyang together with the great Tang army, the king of Goguryeo sent Namsan to ask for surrender.
九月二十一日，與大軍合圍平壤，高句麗王先遣泉男産等，詣英公請降。
Location: 卷06 文武王 8年
Li Ji took Pyongyang.
」秋九月，李勣拔平壤。
Location: 卷22 寶藏王下 27年
King Bojang had Cheon Namsan lead ninety-eight chiefs bearing white banners to surrender to Yi Jeok.
王藏遣泉男産，帥首領九十八人，持白幡，詣勣降，勣以禮接之。
Location: 卷22 寶藏王下 27年
Li Ji went home; Goguryeo was divided into nine protectorates and forty-two prefectures, and the Andong Protectorate-General was set up at Pyongyang.
分五部，百七十六城，六十九萬餘戶，為九都督府，四十二州，百縣，置安東都護府於平壤，以統之。
Location: 卷22 寶藏王下 27年
King Munmu led his army to Pyongyang, joined the Tang forces and destroyed Goguryeo.
王統兵。與仁問欽純等至平壤。會唐兵滅麗
Location: 紀異第二 文虎王法敏
In 668, Qibi Heli first reaches the foot of Pyongyang city, and Li Shiji's army follows and besieges it for a little over a month; the Goguryeo king Jang sends 98 leaders, including Yeon Namsan, with white flags to surrender to Li Shiji.
契苾何力先引兵至平壤城下，勣軍繼之，圍平壤月餘，高麗王藏遣泉男產帥首領九十八人，持白幡詣勣降，勣以禮接之。
Location: 권201 668년 항
A and B are two of the sources listed above.
| On what point | Source A | Source B | What differs (in Korean) |
|---|---|---|---|
| Who | Samguk Yusa (Memorabilia of the Three Kingdoms) | Zizhi Tongjian (Comprehensive Mirror) | a는 문무왕이 합세해 멸함, b는 이적이 포위하고 고구려왕 장이 항복 |
Place: 平壤
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