diff --git a/src/GBNewEnergy.Protocol.Test/NEPackageTest.cs b/src/GBNewEnergy.Protocol.Test/NEPackageTest.cs
index 4b2a93c..7faa257 100644
--- a/src/GBNewEnergy.Protocol.Test/NEPackageTest.cs
+++ b/src/GBNewEnergy.Protocol.Test/NEPackageTest.cs
@@ -68,8 +68,8 @@ namespace GBNewEnergy.Protocol.Test
         public void NELoginUpStreamConstructor3_1()
         {
             // "23 23 01 FE 4C 47 48 43 34 56 31 44 33 48 45 32 30 32 36 35 32 01 00 1F"
-            // "06 07 12 37 02 00 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31"
-            // "23 23 01 FE 4C 47 48 43 34 56 31 44 33 48 45 32 30 32 36 35 32 01 00 1F 06 07 12 37 02 00 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31 EC"
+            // "12 06 08 0A 26 2E 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31"
+            // "23 23 01 FE 4C 47 48 43 34 56 31 44 33 48 45 32 30 32 36 35 32 01 00 1F 12 06 08 0A 26 2E 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31 D4"
             NELoginUpStream nELoginUpStream = new NELoginUpStream("LGHC4V1D3HE202652", "64743066405", 1, 1, new string[] { "1" });
             NEPackage nEPackage = new NEPackage("LGHC4V1D3HE202652", Enums.MsgId.login, Enums.AskId.cmd, nELoginUpStream, EncryptMethod.None);
             string headerHex = nEPackage.Header.ToHexString();
@@ -81,10 +81,11 @@ namespace GBNewEnergy.Protocol.Test
         public void NELoginUpStreamConstructor3_2()
         {
             byte[] header = "23 23 01 FE 4C 47 48 43 34 56 31 44 33 48 45 32 30 32 36 35 32 01 00 1F".ToHexBytes();
-            byte[] body = "06 07 12 37 02 00 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31 EC".ToHexBytes();
+            byte[] body = "12 06 08 0A 26 2E 00 01 36 34 37 34 33 30 36 36 34 30 35 00 00 00 00 00 00 00 00 00 01 01 31 D4".ToHexBytes();
             NEPackage nEPackage = new NEPackage(header, body);
             string headerHex = nEPackage.Header.ToHexString();
             string bodiesHex = nEPackage.Bodies.Buffer.ToHexString();
+            string packageHex = nEPackage.Buffer.ToHexString();
         }
     }
 }
diff --git a/src/GBNewEnergy.Protocol/Extensions/NEExtensions.cs b/src/GBNewEnergy.Protocol/Extensions/NEExtensions.cs
index b9687c4..683c47f 100644
--- a/src/GBNewEnergy.Protocol/Extensions/NEExtensions.cs
+++ b/src/GBNewEnergy.Protocol/Extensions/NEExtensions.cs
@@ -16,11 +16,11 @@ namespace GBNewEnergy.Protocol.Extensions
         {
             return new DateTime(
                 read[offset] + DateLimitYear,
-                read[offset++],
-                read[offset++],
-                read[offset++],
-                read[offset++],
-                read[offset++]);
+                read[++offset],
+                read[++offset],
+                read[++offset],
+                read[++offset],
+                read[++offset]);
         }
 
         public static ushort ReadUShortH2LLittle(this byte[] read, int offset, int len)
@@ -85,11 +85,11 @@ namespace GBNewEnergy.Protocol.Extensions
         public static void WriteLittle(this byte[] write, DateTime date, int offset,int len)
         {
             write[offset] = (byte)(date.Year - DateLimitYear);
-            write[offset++] = (byte)date.Month;
-            write[offset++] = (byte)date.Day;
-            write[offset++] = (byte)date.Hour;
-            write[offset++] = (byte)date.Minute;
-            write[offset++] = (byte)date.Second;
+            write[++offset] = (byte)date.Month;
+            write[++offset] = (byte)date.Day;
+            write[++offset] = (byte)date.Hour;
+            write[++offset] = (byte)date.Minute;
+            write[++offset] = (byte)date.Second;
         }
 
         /// <summary>