《新唐书·列传·卷一百三十四》
后来还有用铁笼头连在枷上，被枷住的人被拉着在地上转圈，一会儿工夫就被闷死了。
后以铁为冒头，被枷者宛转地上，少迁而绝。
Later, there was even an iron cage head connected to the cangue, and the person with the cangue was pulled around in circles on the floor, and after a while, he would suffocate to death.