diff --git a/GuanLinDemo/GuanLinDemo.csproj b/GuanLinDemo/GuanLinDemo.csproj
new file mode 100644
index 0000000..3a8421a
--- /dev/null
+++ b/GuanLinDemo/GuanLinDemo.csproj
@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ParallelProcessPractice.Core\ParallelProcessPractice.Core.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/GuanLinDemo/Program.cs b/GuanLinDemo/Program.cs
new file mode 100644
index 0000000..cfd3918
--- /dev/null
+++ b/GuanLinDemo/Program.cs
@@ -0,0 +1,58 @@
+using ParallelProcessPractice.Core;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace GuanLinDemo
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var guanlinTaskRunner = new GuanlinTaskRunner1();
+            guanlinTaskRunner.ExecuteTasks(1000);
+        }
+    }
+
+    public class GuanlinTaskRunner1 : TaskRunnerBase
+    {
+        private readonly int[] _maxConcurrency;
+        private readonly List<SemaphoreSlim> _semaphoreSlimList;
+
+
+        public GuanlinTaskRunner1()
+        {
+            _maxConcurrency = new[] { 0, 5, 3, 3 };
+            _semaphoreSlimList = new List<SemaphoreSlim>{
+                null,
+                new SemaphoreSlim(_maxConcurrency[1]),
+                new SemaphoreSlim(_maxConcurrency[2]),
+                new SemaphoreSlim(_maxConcurrency[3])
+            };
+        }
+
+        public override void Run(IEnumerable<MyTask> tasks)
+        {
+            Task.WaitAll(tasks.Select(task => Task.Factory.StartNew(() => { GetStepAndRunTask(task); })).ToArray());
+        }
+
+        private  void GetStepAndRunTask(MyTask task)
+        {
+            for (var i = 1; i <= 3; i++)
+            {
+                try
+                {
+                    _semaphoreSlimList[i].Wait();
+                    task.DoStepN(i);
+                }
+                finally
+                {
+                    _semaphoreSlimList[i].Release();
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/ParallelProcessPractice.sln b/ParallelProcessPractice.sln
index 387a9fb..82061a7 100644
--- a/ParallelProcessPractice.sln
+++ b/ParallelProcessPractice.sln
@@ -47,6 +47,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NathanDemo", "NathanDemo\Na
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JolinDemo", "JolinDemo\JolinDemo.csproj", "{C58EA4C0-FFEC-43D6-97ED-EF755AE14B64}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GuanLinDemo", "GuanLinDemo\GuanLinDemo.csproj", "{40C57168-5387-452E-BE15-14A86B69D167}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -117,6 +119,10 @@ Global
 		{C58EA4C0-FFEC-43D6-97ED-EF755AE14B64}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C58EA4C0-FFEC-43D6-97ED-EF755AE14B64}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C58EA4C0-FFEC-43D6-97ED-EF755AE14B64}.Release|Any CPU.Build.0 = Release|Any CPU
+		{40C57168-5387-452E-BE15-14A86B69D167}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{40C57168-5387-452E-BE15-14A86B69D167}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{40C57168-5387-452E-BE15-14A86B69D167}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{40C57168-5387-452E-BE15-14A86B69D167}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -136,6 +142,7 @@ Global
 		{1B34613F-9384-4365-A54E-D9719D6E902B} = {B21D6D24-8EC2-497F-AE16-E0155FEE28CE}
 		{CD021A28-2C35-4FAA-BFDC-3E4543F009A0} = {B21D6D24-8EC2-497F-AE16-E0155FEE28CE}
 		{C58EA4C0-FFEC-43D6-97ED-EF755AE14B64} = {B21D6D24-8EC2-497F-AE16-E0155FEE28CE}
+		{40C57168-5387-452E-BE15-14A86B69D167} = {B21D6D24-8EC2-497F-AE16-E0155FEE28CE}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {15051360-3A56-4052-A944-97C62F90EEC6}