diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index fbf0ff5..735dc6c 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -8,6 +8,7 @@
       "name": "mdbook-repl",
       "version": "0.2.4",
       "devDependencies": {
+        "@babel/standalone": "^7.25.6",
         "@types/node": "^22.5.5",
         "@types/react": "^18.3.5",
         "@types/react-dom": "^18.3.0",
@@ -307,6 +308,16 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/standalone": {
+      "version": "7.25.6",
+      "resolved": "https://registry.npmjs.org/@babel/standalone/-/standalone-7.25.6.tgz",
+      "integrity": "sha512-Kf2ZcZVqsKbtYhlA7sP0z5A3q5hmCVYMKMWRWNK/5OVwHIve3JY1djVRmIVAx8FMueLIfZGKQDIILK2w8zO4mg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.25.0",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.25.0.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index d3f13c3..687903f 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -10,6 +10,7 @@
     "format": "prettier -c --write ."
   },
   "devDependencies": {
+    "@babel/standalone": "^7.25.6",
     "@types/node": "^22.5.5",
     "@types/react": "^18.3.5",
     "@types/react-dom": "^18.3.0",
diff --git a/frontend/src/components/Editor/Editor.tsx b/frontend/src/components/Editor/Editor.tsx
index 999bf78..ef3bb0c 100644
--- a/frontend/src/components/Editor/Editor.tsx
+++ b/frontend/src/components/Editor/Editor.tsx
@@ -30,8 +30,6 @@ export default function Editor() {
   // listen ctrl + r
   useEffect(() => {
     const handleKeyDown = (e: KeyboardEvent) => {
-      console.log(e.view?.window === window);
-
       if (e.view?.window === window && e.ctrlKey && e.key.toLowerCase() === "r") {
         e.preventDefault();
         execuateCode();
diff --git a/frontend/src/contexts/AppProvider.tsx b/frontend/src/contexts/AppProvider.tsx
index 76faf3b..3f35c7a 100644
--- a/frontend/src/contexts/AppProvider.tsx
+++ b/frontend/src/contexts/AppProvider.tsx
@@ -20,9 +20,9 @@ const defaultOutputs: OutputsType = {
 
 const defaultEditorOptions: EditorType = {
   theme: "light",
-  lang: "javascript",
-  code: defaultCodes.javascript,
-  defaultCode: defaultCodes.javascript,
+  lang: "python",
+  code: defaultCodes.python,
+  defaultCode: defaultCodes.python,
   readonly: false
 };
 
diff --git a/frontend/src/data/app.ts b/frontend/src/data/app.ts
index 6331626..4398d17 100644
--- a/frontend/src/data/app.ts
+++ b/frontend/src/data/app.ts
@@ -1,9 +1,9 @@
 const languages = ["python", "typescript", "javascript"] as const;
 
 const defaultCodes = {
-  python: '# This is default python code\n\nprint("Hello world")',
-  typescript: '// This is default typescript code\n\nlet message: string = "Hello, world!";\nconsole.log(message);',
-  javascript: '// This is default javascript code\n\nlet message = "Hello, world!";\nconsole.log(message);'
+  python: '# Default python code\n\nprint("Hello, python")',
+  typescript: '// Default typescript code\n\nlet message: string = "Hello, typescript!";\nconsole.log(message);',
+  javascript: '// Default javascript code\n\nlet message = "Hello, javascript!";\nconsole.log(message);'
 } as const;
 
 export { languages, defaultCodes };
diff --git a/frontend/src/workers/python-worker.js b/frontend/src/workers/python-worker.js
index 57df16a..9439618 100644
--- a/frontend/src/workers/python-worker.js
+++ b/frontend/src/workers/python-worker.js
@@ -1,4 +1,4 @@
-self.importScripts("https://cdn.jsdelivr.net/pyodide/v0.25.0/full/pyodide.js");
+self.importScripts("https://cdn.jsdelivr.net/pyodide/v0.26.2/full/pyodide.js");
 
 let pyodide = null;
 
diff --git a/frontend/src/workers/typescript-worker.js b/frontend/src/workers/typescript-worker.js
index 6eeed42..e02b2c9 100644
--- a/frontend/src/workers/typescript-worker.js
+++ b/frontend/src/workers/typescript-worker.js
@@ -1,4 +1,4 @@
-self.importScripts("https://unpkg.com/@babel/standalone@7.23.10/babel.min.js");
+self.importScripts("https://mirrors.sustech.edu.cn/cdnjs/ajax/libs/babel-standalone/7.25.6/babel.min.js");
 
 const postmessage = (status, msg) => self.postMessage({ lang: "typescript", output: { status, data: msg } });