Dispute Between Song and Liao Dynasties over Lake Tian Chi

The dispute between Song dynasty and Liao dynasty on Tian Chi had lasted for more than thirty years, and thus was a typical diplomatic issue in determining the national boundary at He Dong. Tian Chi locates in the northern of Ning Hua Jun of Northern Song dynasty and the southern of Shuo Zhou of Liao dynasty. Tian Chi-disputing reflected the background and reason of boundary feud between Song dynasty and Liao dynasty on He Dong area.