Now that we’ve taken you through Hulegu’s campaigns during Mongke’s reign, it’s time we cut back east to Mongke himself, and the Mongol invasion of the Song Dynasty, the great and immensely wealthy masters of southern China. Among the largest and most thoroughly planned of Mongol campaigns, it was one cut suddenly short with drastic consequences for the Mongol Empire. I’m your host David, and this is Kings and Generals: Ages of Conquest.   Planning a war against the Song Dynasty was no easy task. All of Mongke’s actions of his reign from 1251-1258 can be understood as him making preparations for it: cataloguing the resources and manpower of the empire, strengthening the central government and securing his various flanks. Mongke had valuable experience to use to determine his strategy; since 1234, the Mongols had fought rounds of inconclusive warfare with the Song; penetrating deep into the Dynasty’s territory, routinely defeating armies and taking cities, yet never able to make substantial gains and frustrated by Song tenacity, all in an environment almost tailor made to hampher cavalry armies.   To understand the war with the Song, it’s  necessary to introduce the Dynasty and its ruling house of Zhao- but what a task that is! In its 300 year history the Song were among the most complex and fascinating of all of China’s imperial dynasties, a period when Chinese culture reached staggering new heights. To summarize it with any accuracy requires an entire podcast series to do so-  the Cambridge History of China managed to get it down to two volumes totalling over 2,000 pages. The Song emperors oversaw a period of amazing economic, technological, agricultural and cultural achievements. Urbanization increased; the southern Song capital of Linan, modern Hangzhou, had a population in the 13th century conservatively estimated at 1.5 million. Paper money, a massive expansion and improvement of farming and rice cultivation, foreign and overseas trade, gunpowder, porcelain… the list goes on and on for either innovations or improvements the Song undertook. The wealth of the Song was immense, and it is rightly considered a Golden Age.    The Song were a dominant force in China since the 960s, emerging in the decades after the fall of the powerful Tang Dynasty, a period of disunity called the 10 Kingdoms and 5 Dynasties.  Through great effort the Song swallowed up the other kingdoms of southern China and marched up into the north China plain, where they butted heads with the Khitan ruled Liao Dynasty. Rounds of warfare followed for the remainder of the 10th century, but a pattern which became all too routine emerged. The northern, largely cavalry based armies could outmaneuver and often annihilate the Song armies, whose offensive performance was poor even at their height. Yet the Khitans were frustrated by the defensive ability of the Song, and were unable to hold gains made against them- particularly when a giant Song crossbow speared the Khitan leader in 1005. Weeks later, the Song and Liao came to terms for the infamous Chanyuan Treaty, marking their borders and requiring the Song deliver a massive annual tribute of silk and silver to the Liao.   Part of the reason for the often criticized poor offensive military performance of the Song goes back to its founder, Zhao Kuangyin (kuang-yin), Taizu of Song. Zhao was a military man, as was his father and grandfather. Zhao owed much of his rise to the military- and also blamed it for the dissolution of the Tang Dynasty. Often, new Chinese dynasties structure themselves on what they perceived to be a key weakness of the preceding dynasty. To Zhao Kuangyin, the breakup of the Tang Dynasty came from military leaders and generals who grew too powerful, ignoring the imperial court to seek their own power, such as An Lushan in the 8th century. To Zhao, internal stability of the dynasty could only be secured with the military on a tight leash. Soon after consolidating power, the military leaders who