string ch = Console.ReadLine();
ChineseChar cc = new ChineseChar(ch[0]);
var pinyins = cc.Pinyins.ToList();
pinyins.ForEach(Console.WriteLine);

  public class PinYinConverterHelp
  {
    public static PingYinModel GetTotalPingYin(string str)
    {
      var chs = str.ToCharArray();
      //记录每个汉字的全拼
      Dictionary<int, List<string>> totalPingYins = new Dictionary<int, List<string>>();
      for (int i = 0; i < chs.Length; i++)
      {
        var pinyins = new List<string>();
        var ch = chs[i];
        //是否是有效的汉字
        if (ChineseChar.IsValidChar(ch))
        {
          ChineseChar cc = new ChineseChar(ch);
          pinyins = cc.Pinyins.Where(p => !string.IsNullOrWhiteSpace(p)).ToList();
        }
        else
        {
          pinyins.Add(ch.ToString());
        }

        //去除声调，转小写
        pinyins = pinyins.ConvertAll(p => Regex.Replace(p, @"\d", "").ToLower());
        //去重
        pinyins = pinyins.Where(p => !string.IsNullOrWhiteSpace(p)).Distinct().ToList();
        if (pinyins.Any())
        {
          totalPingYins[i] = pinyins;
        }
      }
      PingYinModel result = new PingYinModel();
      foreach (var pinyins in totalPingYins)
      {
        var items = pinyins.Value;
        if (result.TotalPingYin.Count <= 0)
        {
          result.TotalPingYin = items;
          result.FirstPingYin = items.ConvertAll(p => p.Substring(0, 1)).Distinct().ToList();
        }
        else
        {
          //全拼循环匹配
          var newTotalPingYins = new List<string>();
          foreach (var totalPingYin in result.TotalPingYin)
          {
            newTotalPingYins.AddRange(items.Select(item => totalPingYin + item));
          }
          newTotalPingYins = newTotalPingYins.Distinct().ToList();
          result.TotalPingYin = newTotalPingYins;

          //首字母循环匹配
          var newFirstPingYins = new List<string>();
          foreach (var firstPingYin in result.FirstPingYin)
          {
            newFirstPingYins.AddRange(items.Select(item => firstPingYin + item.Substring(0, 1)));
          }
          newFirstPingYins = newFirstPingYins.Distinct().ToList();
          result.FirstPingYin = newFirstPingYins;
        }
      }
      return result;
    }
  }

  public class PingYinModel
  {
    public PingYinModel()
    {
      TotalPingYin = new List<string>();
      FirstPingYin = new List<string>();
    }

    //全拼
    public List<string> TotalPingYin { get; set; }

    //首拼
    public List<string> FirstPingYin { get; set; }
  }

 Console.WriteLine("请输入中文：");
 string str = Console.ReadLine();
var strs = PinYinConverterHelp.GetTotalPingYin(str).TotalPingYin;
var frists = PinYinConverterHelp.GetTotalPingYin(str).FirstPingYin;
 Console.WriteLine("全拼音：" + String.Join(",", strs));
 Console.WriteLine("首音：" + String.Join(",", frists));
Console.WriteLine();