生＆死＝？

ConsoleApplication.cs

using System;
using System.Linq;
using System.Text;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            var life = Encoding.UTF8.GetBytes("生");
            var death = Encoding.UTF8.GetBytes("死");
            var x = life.Select((b, i) => (byte)(b & death[i])).ToArray();
            Console.WriteLine(Encoding.UTF8.GetString(x));
        }
    }
}