This story originates from the Three Kingdoms Period, when the strategist Zhuge Liang led the Shu Army in an invasion of the southern lands (roughly modern-day Yunnan and northern Burma). After subduing the barbarian king Meng Huo, Zhuge Liang led the army back to Shu, but met a swift-flowing river which defied all attempts to cross it. A barbarian lord informed him, in olden days, the barbarians would sacrifice 50 men and throw their heads into the river to appease the river spirit and allow them to cross; Zhuge Liang, however, did not want to cause any more bloodshed, and instead killed the cows and horses the army brought along, and filled their meat into buns shaped roughly like human heads - round with a flat base - to be made and then thrown into the river. After a successful crossing, he named the buns "barbarian's head