diff --git a/internal/handler/install.go b/internal/handler/install.go
index 8f8fb2a..e6fdecc 100644
--- a/internal/handler/install.go
+++ b/internal/handler/install.go
@@ -7,22 +7,26 @@ import (
 	"github.com/OmniX-Space/MeowBox-Core/internal/service"
 )
 
+func StartInstall(config *service.Config) {
+	log.Println("[Info] Starting installation process.")
+	server := service.CreateWebService(config)
+	router := http.NewServeMux()
+	router.Handle("/", RouteInstall())
+	staticRouter := RouteStaticFiles()
+	router.Handle("/favicon.ico", staticRouter)
+	router.Handle("/css/", staticRouter)
+	router.Handle("/font-awesome/", staticRouter)
+	router.Handle("/js/", staticRouter)
+	router.Handle("/img/", staticRouter)
+	router.Handle("/.well-known/", RouteWebDevTools())
+	server.Handler = InjectWebServerHeaders(config, router)
+	service.ListenWebService(config, server)
+}
+
 func CheckInstall(config *service.Config) {
 	if GetInstallLock(config) == false {
 		log.Println("[Info] MeowBox-Core is not installed.")
-		log.Println("[Info] Starting installation process.")
-		server := service.CreateWebService(config)
-		router := http.NewServeMux()
-		router.Handle("/", RouteInstall())
-		staticRouter := RouteStaticFiles()
-		router.Handle("/favicon.ico", staticRouter)
-		router.Handle("/css/", staticRouter)
-		router.Handle("/font-awesome/", staticRouter)
-		router.Handle("/js/", staticRouter)
-		router.Handle("/img/", staticRouter)
-		router.Handle("/.well-known/", RouteWebDevTools())
-		server.Handler = InjectWebServerHeaders(config, router)
-		service.ListenWebService(config, server)
+		StartInstall(config)
 		return
 	}
 	log.Println("[Info] MeowBox-Core is already installed.")
diff --git a/internal/handler/web/css/install.css b/internal/handler/web/css/install.css
index feadb10..37a6bdb 100644
--- a/internal/handler/web/css/install.css
+++ b/internal/handler/web/css/install.css
@@ -10,18 +10,33 @@
 
 .welcome-button {
     position: absolute;
+    height: 32px;
+    width: 32px;
     bottom: 64px;
-    width: 150px;
     backdrop-filter: blur(3px);
     border: 0;
-    border-radius: 20px;
+    border-radius: 100%;
     background-color: rgba(255, 255, 255, 0.2);
     color: white;
-    padding: 8px;
+    padding: 6px;
     font-size: 24px;
     cursor: pointer;
 }
 
+.welcome-button i {
+    position: relative;
+    top: -3px;
+    left: -5px;
+}
+
+.welcome-button:hover {
+    background-color: rgba(255, 255, 255, 0.3);
+}
+
+.welcome-button:active {
+    background-color: rgba(255, 255, 255, 0.4);
+}
+
 .welcome h1 {
     font-weight: bold;
     font-size: 64px;
@@ -53,6 +68,39 @@
     animation: fadeInOut 3s forwards;
 }
 
+.language-select {
+    position: fixed;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    width: 80%;
+    height: 95%;
+    border-radius: 20px;
+    background-color: #fff;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.2);
+}
+
+.language-select i {
+    position: absolute;
+    color: rgb(0, 102, 255);
+    font-size: 256px;
+    left: 32px;
+}
+
+.language-select-container {
+    position: absolute;
+    width: calc(100% - 416px);
+    height: calc(90% - 64px);
+    right: 32px;
+    bottom: 64px;
+    border-radius: 16px;
+    background-color: rgba(0, 0, 0, 0.08);
+}
+
 .container {
     width: 80%;
     height: calc(100% - 100px);
@@ -60,4 +108,29 @@
     backdrop-filter: blur(3px);
     background-color: rgba(255, 255, 255, 0.2);
     margin: 50px auto;
+}
+
+@media (max-width: 768px) {
+    .language-select {
+        width: 65%;
+    }
+
+    .language-select i {
+        font-size: 128px;
+        left: auto;
+        top: 64px;
+    }
+
+    .language-select-container {
+        width: 80%;
+        height: calc(100% - 288px);
+        right: auto;
+        bottom: 64px;
+    }
+}
+
+@media (max-width: 480px) {
+    .language-select {
+        width: 85%;
+    }
 }
\ No newline at end of file
diff --git a/internal/handler/web/js/i18n.js b/internal/handler/web/js/i18n.js
index 9584d4b..4bae23f 100644
--- a/internal/handler/web/js/i18n.js
+++ b/internal/handler/web/js/i18n.js
@@ -9,11 +9,17 @@
 const en = {
     "hello": "Hello",
 };
+
 const zhCN = {
     "hello": "你好",
 };
+
+const zhTW = {
+    "hello": "哈囉",
+};
+
 const jp = {
     "hello": "こんにちは",
 };
 
-const languages = [en, zhCN, jp];
\ No newline at end of file
+const languages = [en, zhCN, zhTW, jp];
\ No newline at end of file
diff --git a/internal/handler/web/js/install.js b/internal/handler/web/js/install.js
index 2982481..28f079a 100644
--- a/internal/handler/web/js/install.js
+++ b/internal/handler/web/js/install.js
@@ -6,7 +6,11 @@ function welcome() {
     welcomeDiv.classList.add("welcome");
     const welcomeButton = document.createElement("button");
     welcomeButton.classList.add("welcome-button");
-    welcomeButton.innerHTML = 'Next <i class="fa-solid fa-circle-arrow-right"></i>';
+    welcomeButton.innerHTML = '<i class="fa-regular fa-circle-right"></i>';
+    welcomeButton.addEventListener("click", () => {
+        page.removeChild(welcomeDiv);
+        language_select();
+    });
     welcomeDiv.appendChild(welcomeButton);
     function displayNextLanguage() {
         if (currentIndex >= languages.length) {
@@ -26,9 +30,20 @@ function welcome() {
     page.appendChild(welcomeDiv);
 }
 
-function install() {
+function language_select() {
+    const languageSelectDiv = document.createElement("div");
+    languageSelectDiv.classList.add("language-select");
+    const languageIcon = document.createElement("i");
+    languageIcon.classList.add("fa-solid", "fa-earth-americas");
+    languageSelectDiv.appendChild(languageIcon);
+    const languageSelectContainer = document.createElement("div");
+    languageSelectContainer.classList.add("language-select-container");
+    languageSelectDiv.appendChild(languageSelectContainer);
+    page.appendChild(languageSelectDiv);
 }
 
+function env_detection() { }
+
 // Load external script
 function loadScript(scriptUrl) {
     return new Promise((resolve, reject) => {