diff --git a/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承_继承的基本概念练习.csproj b/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承_继承的基本概念练习.csproj
deleted file mode 100644
index 2150e37..0000000
--- a/C#核心/Lesson12_继承_继承的基本概念练习/Lesson12_继承_继承的基本概念练习.csproj
+++ /dev/null
@@ -1,10 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-</Project>
diff --git a/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs b/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs
deleted file mode 100644
index d72b5f5..0000000
--- a/C#核心/Lesson12_继承_继承的基本概念练习/Program.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-namespace Lesson12_继承_继承的基本概念练习
-{
-    class Human
-    {
-        public string name;
-        public int age;
-        public void Speak()
-        {
-            Console.WriteLine("说话");
-        }
-    }
-    class Warrior : Human
-    {
-        public int atk;
-        public void Attack()
-        {
-            Console.WriteLine("攻击");
-        }
-    }
-    internal class Program
-    {
-        static void Main(string[] args)
-        {
-            Console.WriteLine("Hello, World!");
-            Warrior w = new Warrior();
-            w.name = "HK";
-            w.age = 18;
-            w.Speak();
-            w.atk = 5;
-            w.Attack();
-
-        }
-    }
-}