using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        string txt = "𡍼沂峰";

        Encoding  utf16BE = Encoding.BigEndianUnicode;

        // 從文字轉UTF-16BE(Big Endian)

        Byte[] ba = utf16BE.GetBytes(txt);

        for(var i=0;i<ba.Length;i+=2)

            Console.Write("\\u{0:x}{1:x}",ba[i],ba[i+1]);

        Console.WriteLine();

        // 從Byte[]轉回來文字

        char[] a= utf16BE.GetChars(ba);

        Console.WriteLine(a);

    }

}