it is not easy to define "what law is" if we look back to our life in secondary school. we will know that there are things we are allowed to do and things we are not allowed to do. therefore human always live together under the social regulates. we can assume that law consists of a body of rules. law regulates social conduct with a view to enabling people to live peaceably in a well-ordered society. in practice, law must identify the duties and powers of the government and individuals, as well as enforcing the duties and regulating the exercise of power.