↑ Charles Roger Tennant (1996). A history of Korea . Kegan Paul International. tr. 22. ISBN071030532X. Truy cập 2012 February ninth. capital on the middle reaches of the Yalu near the modern Chinese town of Ji'an, calling it 'Hwando'. By developing both their iron weapons and their political organization, they had reached a stage where in the turmoil that accompanied the break-up of the Han empire they were able to threaten the Chinese colonies now under the nominal control of the Kiểm tra giá trị ngày tháng trong: |accessdate= (trợ giúp)
↑ Charles Roger Tennant (1996). A history of Korea . Kegan Paul International. tr. 22. ISBN071030532X. Truy cập 2012 February ninth. Wei. In 242, under King Tongch'ŏn, they attacked a Chinese fortress near the mouth of the Yalu in an attempt to cut the land route across Liao, in return for which the Wei invaded them in 244 and sacked Hwando. Kiểm tra giá trị ngày tháng trong: |accessdate= (trợ giúp)
