Explain the Han River in Sejong Annals Geography.

 In terms of Daecheon Stream, the source of the Hangang River comes from Odaesan Mountain in Gangwon-do, reaches the west of Yeongwol-gun, merges several streams to become Gageundongjin, passes through Yeoncheon in Chungju, Chungcheong-do, and flows to the west to become Yeocheonnyeong. It became Yongjin-do, went into Sapo, and the two waters combined to reach the boundary of Gwangju, became Domijin, became Gwangnaru next time, became Hangangdo Island in the south of Seoul, and became Noh Do-jin in the west, and became Yongsan River in the west. The river passes through the south of the capital and reaches the north of Geumcheon, becomes Yanghwado Island, Gongamjin from the north of Yangcheon, merges with the Imjingang River and reaches the north of Tongjin, and becomes Jogang. One flows south, passes through Gapgotnaru, east of Ganghwa-bu, and enters the sea, and all the grains carried by boat from Jeolla-do and Chungcheong-do reach Seoul through this place. The Imjingang River came from Bangjang-dong, Yeongpung-hyeon, the inner part of Hamgil-do, and passed through the boundaries of Icheon, Anhyup, and Saknyeong, and finally became a Jingpado Island.