public delegate void SayHello(string name);

    class Program

    {

        static void Main(string[] args)

        {

            SayHello sayHello;

            sayHello = English;

            sayHello += Chinese;

            sayHello("Baby");

            Console.ReadLine();

        }

        public static void English(string name)

        {

            Console.WriteLine("Hello, " + name);

        }

        public static void Chinese(string name)

        {

            Console.WriteLine("你好, " + name);

        }

    }