Download or read book Two Sons of Heaven written by Jing-shen Tao and published by . This book was released on 1988 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study of diplomatic relations between the Sung dynasty of tenth-and eleventh-century China and the Liao, invaders from Manchuria, challenges the popular belief that China always considered her neighbors as inferior barbarians in their attempt to maintain a China-centered world order.