Mongolians Show Up to My House to End Farming and Return to Pastoralism from the Start?

The Jurchen were gone, but a Mongol army suddenly appeared, crossing the Altai Mountains and heading straight for southern Mongolia. “Stop damn well dreaming about heading south to Jinling to flirt with princesses and drink wine! Come with me beyond the passes and drive out these troublemaking barbarians first. We have to stop them outside the Great Wall!” The Mongols came to expel the Chinese and restore the Tartars. Peace was merely bait cast by a pack of wolves; retreat would ultimately become the epitaph carved by a flock of sheep. If we do not fight on the grasslands, we resist in Hebei; if we cannot hold Hebei, we fall back to Xiangyang; and if even Xiangyang is lost, then behind us lies Yashan! The commander who seems like a mere mascot is, in truth, the night watchman of civilization. Will the tide of cavalry crush the Great Wall, or will a wall of flesh and blood turn the tide? [Author's thoughts] ⚠️ This book is packed with details about ancient warfare.