diff --git a/README.en.md b/README.en.md
deleted file mode 100644
index aa66e9ee1a8a4f4e1c539dc2d9b52681d4fe9468..0000000000000000000000000000000000000000
--- a/README.en.md
+++ /dev/null
@@ -1,37 +0,0 @@
-# ArkTS Basic Syntax Demo
-
-## Introduction
-
-
-
-## Preview
-
-
-
-## Usage
-
-
-
-## Project Structure
-
-```
-├──entry/src/main/ets/
-│  ├──entryability
-│  │  └──EntryAbility.ets  
-│  ├──entrybackupability
-│  │  └──EntryBackupAbility.ets  
-│  └──pages
-│     ├──BasicPage.ets                  // Basic syntax example
-│     ├──BubbleSortPage.ets             // Bubble sort 
-│     ├──DaffodilsNumberPage.ets        // Print daffodil numbers
-│     └──MultiplicationTablePage.ets    // Print the multiplication table 
-└───entry/src/main/resources            // Application resources directory
-```
-
-## Permissions
-
-
-
-## Constraints and Limitations
-
-
diff --git a/README.md b/README.md
index ab966948f1fa1a37688d4eaec0780111ea87f918..e5e9238d01ac0fc52b95a1029f4cca60cb7301c5 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@
 
 1. 本示例仅支持预览器运行。
 
-2. HarmonyOS系统：HarmonyOS 6.0.0 Release及以上。
+2. HarmonyOS系统：HarmonyOS 5.0.5 Release及以上。
 
 3. DevEco Studio版本：DevEco Studio 6.0.0 Release及以上。
 
diff --git a/build-profile.json5 b/build-profile.json5
index c8fdfbdb868270a626083b04ab2b2fc4c04274df..1a6814dc8468417c33947ca74d02b3b3a12db35c 100644
--- a/build-profile.json5
+++ b/build-profile.json5
@@ -6,7 +6,7 @@
         "name": "default",
         "signingConfig": "default",
         "targetSdkVersion": "6.0.0(20)",
-        "compatibleSdkVersion": "6.0.0(20)",
+        "compatibleSdkVersion": "5.0.5(17)",
         "runtimeOS": "HarmonyOS",
         "buildOption": {
           "strictMode": {
diff --git a/entry/src/main/ets/pages/BasicPage.ets b/entry/src/main/ets/pages/BasicPage.ets
index 00671768a495e2986cf44bc84e19d93c0b6f6a01..298a8da663fab5deb336870b95753253a832fc37 100644
--- a/entry/src/main/ets/pages/BasicPage.ets
+++ b/entry/src/main/ets/pages/BasicPage.ets
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 /**
  * 变量与声明
  */
@@ -68,7 +69,6 @@ function primitiveTypes() {
 
 primitiveTypes();
 
-
 // 引用类型
 function referenceTypes() {
   // Object类型
@@ -455,7 +455,6 @@ function makeMilkTeaWithOptionalUseDefault(flavor: string, sweetness: string = '
 
 console.log(makeMilkTeaWithOptionalUseDefault('strawberry'));
 
-
 // 剩余参数
 function makeMilkTeaWithRest(flavor: string, sweetness: string = 'full sugar', ...toppings: string[]): string {
   let tea = `A cup of ${flavor} milk tea with ${sweetness}`;
diff --git a/entry/src/main/ets/pages/BubbleSortPage.ets b/entry/src/main/ets/pages/BubbleSortPage.ets
index 9fb4b02391da848fbdba4c69900b38199bfa3b4a..b56b89a6132fac4a9187475b6fca1897560c1d4a 100644
--- a/entry/src/main/ets/pages/BubbleSortPage.ets
+++ b/entry/src/main/ets/pages/BubbleSortPage.ets
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 // 冒泡排序: 通过交换相邻元素，对数字数组进行升序排序。
 function BubbleSort(arr: number[]): number[] {
   const n = arr.length;
diff --git a/entry/src/main/ets/pages/DaffodilsNumberPage.ets b/entry/src/main/ets/pages/DaffodilsNumberPage.ets
index 65949295ca1b053d719574aa9a8bb3a8ecfc128e..dd461f7e5e334d12dda309835ad12a16e316713d 100644
--- a/entry/src/main/ets/pages/DaffodilsNumberPage.ets
+++ b/entry/src/main/ets/pages/DaffodilsNumberPage.ets
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 // 找出所有三位数的水仙花数
 function DaffodilsNumber() {
   let result: number[] = [];
diff --git a/entry/src/main/ets/pages/MultiplicationTablePage.ets b/entry/src/main/ets/pages/MultiplicationTablePage.ets
index e67bd2c08ca34df589f4688e21f854f0b69ce173..1567b5a6197038e055862d495efc1cac129c816e 100644
--- a/entry/src/main/ets/pages/MultiplicationTablePage.ets
+++ b/entry/src/main/ets/pages/MultiplicationTablePage.ets
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 // 打印九九乘法表
 function MultiplicationTable() {
   let result = '';
@@ -47,6 +48,4 @@ struct MultiplicationTablePage {
     .height('100%')
     .width('100%')
   }
-}
-
-
+}
\ No newline at end of file