By the time of the Mongol invasion, the average Chinese soldier was astounded by the size and ability of his Mongol counterpart. A diet of yak milk and steaks had made him a different species. That plus the first coordinated mobile artillery in the form of archery from horseback, and the Mongols routinely beat Chinese armies where they were outnumbered ten to one, or more. That is brains and brawn, fueled by being at the top of the food chain. Tofu and bean sprouts do not create a warrior race.
