public void LSPResponsibility() { { Chinese people = new Chinese(); people.Traditional(); DoChinese(people); } { Chinese people = new HuBei(); people.Traditional(); DoChinese(people);//people 的实例方法是Chinese } { var people = new HuBei();//执行左边的类的属性方法 people.Traditional(); DoChinese(people); people.SayHi();//people 的实例方法是Hubei } }