Conversión entre tipo de datos JSON y tipo de objeto

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;//要引入这个包哦

namespace JsonTest
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Employees> employees = new List<Employees>();
            employees.Add(new Employees { name = "周润发",sex = "男" , address = "武汉",sorce = new sorce {  chinese ="chin12",english="eng12",math = "mat12"} });
            employees.Add(new Employees { name = "李素净", sex = "女", address = "兰州", sorce = new sorce { chinese = "chin13", english = "eng13", math = "mat13" } });
            employees.Add(new Employees { name = "周智慧", sex = "男", address = "武汉", sorce = new sorce { chinese = "chin14", english = "eng14", math = "mat14" } });
            var jsonstr = JsonConvert.SerializeObject(employees);
            Console.WriteLine(jsonstr);
            var emp = JsonConvert.DeserializeObject<List<Employees>>(jsonstr);
            foreach (var item in emp)
            {
                Console.WriteLine(item.name+" "+item.sex+" "+item.address+" "+item.sorce.chinese+" "+item.sorce.english+" "+ item.sorce.math);
            }
            Console.ReadKey();

        }
    }
    public class Employees
    {
        public string name;
        public string sex;
        public string address;
        public sorce sorce;
    }
    public class sorce
    {
        public string chinese;
        public string english;
        public string math;
    }
    
}