 Over the next two decades , the relationship between the Liao and Song continued to deteriorate . The Liao were continuously informed of Song attempts to create military alliances with other groups sharing a border with the Liao , and minor border skirmishes were common . Beginning in 999 Emperor Shengzong of Liao led a series of campaigns against the Song that , while generally successful on the battlefield , failed to secure anything of value from the Song . This changed in 1004 when Emperor Shengzong led a campaign that rapidly worked its way to right outside of the Song capital of Kaifeng by only conquering cities that quickly folded to the Liao army , while avoiding protracted sieges of the cities that resisted heavily . Emperor Zhenzong of Song marched out and met the Liao at Chanyuan , a small city on the Yellow River . In January 1005 the two dynasties signed the Chanyuan Treaty , which stipulated that the Song would give the Liao 200 @,@ 000 bolts of silk and 100 @,@ 000 ounces of silver each year , that the two emperors would address each other as equals , that they would finalize the location of their disputed border , and that the two dynasties would resume cordial relations . While the sums ( referred to as gifts by the Song and as tributes by the Liao ) were later increased to 300 @,@ 000 bolts of silk and 200 @,@ 000 ounces of silver per year out of Song fears that the Liao might form a military alliance with the Western Xia , no major wars were fought between the Liao and Song for over a century following the signing of the treaty . By signing the treaty the Song dynasty functionally ceded its claim over the sixteen prefectures . 
