January 14, 1045 (Jiashen twelfth lunar month 24), the Northern Song Dynasty set the Monopolizing field and the Western Xia trade.


Year 1038 (SONG Bao Yuan Dynasty), Yuanhao said the emperor, the country's big summer called Xixia. Yuanhao This means that out of the Song Dynasty. [On www.TodayOnHistory.com] but the Song dynasty does not recognize the independence of Yuanhao from years of war in Song, Xia. However, Song repeated failures; the Western Xia Yiyin frequently sent troops, causing his soldiers killed or injured, financial difficulties, the people of war-weary.
1044 (Song Qingli four) Yuanhao forced to conferences and Song. Yuanhao surface cancel Emperor canonized by the Song dynasty Xia main Song annually to give the the Western Xia silver 70000 two, silk 150,000, 3 million kilograms of tea. (Song Qingli, December 24, 2004), January 14, 1045, the Song Dynasty set in border Monopolizing field Xixia City easy restore civil traders between Song and Xia war this continued for seven years came to an end.
Monopolizing: patent monopoly.
the Monopolizing field: China Liao, Song, Western Xia, Jin regime, each set in a location bordering the frontier market.