<span>What he taught them was to drill with muskets, march in step, switch ranks, and to fight professionally</span>
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Which war are you asking about. There have been hundreds throughout history
The philosophy of respecting the emperor and the Mandate of Heaven was one of the inspirations for the development of filial piety. It is a Confucian philosophy wherein "it is a virtue to respect parents, the elderly, and ancestors." It is of huge importance to the ancient Chinese society because it sets the moral value of people.