diff --git a/Justfile b/Justfile
index a88d6a32..0219d873 100644
--- a/Justfile
+++ b/Justfile
@@ -151,6 +151,15 @@ fe mode="default":
   darwin-build "fern" {{mode}};
   darwin-switch "fern" {{mode}}
 
+# Depoly to frieren(macOS host)
+[macos]
+[group('desktop')]
+fr mode="default": 
+  #!/usr/bin/env nu
+  use {{utils_nu}} *;
+  darwin-build "frieren" {{mode}};
+  darwin-switch "frieren" {{mode}}
+
 # Reset launchpad to force it to reindex Applications
 [macos]
 [group('desktop')]
diff --git a/hosts/darwin-fern/default.nix b/hosts/darwin-fern/default.nix
index 5f5b423b..fd6293b9 100644
--- a/hosts/darwin-fern/default.nix
+++ b/hosts/darwin-fern/default.nix
@@ -1,7 +1,7 @@
 _:
 #############################################################
 #
-#  Fern - MacBook Pro 2022 13-inch M2 16G, mainly for business.
+#  Fern - MacBook Pro 2022 13-inch M2 16G.
 #
 #############################################################
 let
diff --git a/hosts/darwin-frieren/default.nix b/hosts/darwin-frieren/default.nix
new file mode 100644
index 00000000..5569e240
--- /dev/null
+++ b/hosts/darwin-frieren/default.nix
@@ -0,0 +1,13 @@
+_:
+#############################################################
+#
+#  Fern - MacBook Pro 2024 14-inch M4 Pro 48G, mainly for business.
+#
+#############################################################
+let
+  hostname = "frieren";
+in {
+  networking.hostName = hostname;
+  networking.computerName = hostname;
+  system.defaults.smb.NetBIOSName = hostname;
+}
diff --git a/hosts/darwin-frieren/home.nix b/hosts/darwin-frieren/home.nix
new file mode 100644
index 00000000..fd84ef99
--- /dev/null
+++ b/hosts/darwin-frieren/home.nix
@@ -0,0 +1,14 @@
+{
+  programs.ssh = {
+    enable = true;
+    extraConfig = ''
+      Host github.com
+        Hostname github.com
+        # github is controlled by frieren~
+        IdentityFile ~/.ssh/frieren
+        # Specifies that ssh should only use the identity file explicitly configured above
+        # required to prevent sending default identity files first.
+        IdentitiesOnly yes
+    '';
+  };
+}
diff --git a/modules/darwin/apps.nix b/modules/darwin/apps.nix
index 88c9ec5d..4f6bfe59 100644
--- a/modules/darwin/apps.nix
+++ b/modules/darwin/apps.nix
@@ -109,10 +109,6 @@ in {
     masApps = {
       # Xcode = 497799835;
       Wechat = 836500024;
-      QQ = 451108668;
-      # WeCom = 1189898970; # Wechat for Work
-      TecentMeeting = 1484048379;
-      QQMusic = 595615424;
     };
 
     taps = [
@@ -157,8 +153,8 @@ in {
       "firefox"
       "google-chrome"
       "visual-studio-code"
-      "zed" # zed editor
-      "cursor" # an AI code editor
+      # "zed" # zed editor
+      # "cursor" # an AI code editor
       "aerospace" # an i3-like tiling window manager for macOS
       "ghostty" # terminal emulator
 
@@ -167,20 +163,23 @@ in {
 
       # IM & audio & remote desktop & meeting
       "telegram"
+      "qq"
+      "qqmusic"
       # "discord" # update too frequently, use the web version instead
       "microsoft-remote-desktop"
-      "moonlight" # remote desktop client
-      "rustdesk" # meeting
+      # "moonlight" # remote desktop client
+      # "rustdesk" # meeting
+      # "tencent-meeting"
       "zoom" # meeting
 
       # Misc
       # "shadowsocksx-ng" # proxy tool
       "iina" # video player
-      "raycast" # (HotKey: alt/option + space)search, calculate and run scripts(with many plugins)
+      # "raycast" # (HotKey: alt/option + space)search, calculate and run scripts(with many plugins)
       "stats" # beautiful system status monitor in menu bar
       # "reaper"  # audio editor
-      "sonic-pi" # music programming
-      "tencent-lemon" # macOS cleaner
+      # "sonic-pi" # music programming
+      # "tencent-lemon" # macOS cleaner
       "neteasemusic" # music
       "blender@lts" # 3D creation suite
       "mihomo-party" # transparent proxy tool
diff --git a/modules/darwin/nix-core.nix b/modules/darwin/nix-core.nix
index 0ff35ac5..0b12ea73 100644
--- a/modules/darwin/nix-core.nix
+++ b/modules/darwin/nix-core.nix
@@ -12,6 +12,10 @@
   #
   ###################################################################################
 
+  # Determinate uses its own daemon to manage the Nix installation that
+  # conflicts with nix-darwin's native Nix management. so we should disable this option.
+  nix.enable = false;
+
   # Disable auto-optimise-store because of this issue:
   #   https://github.com/NixOS/nix/issues/7273
   # "error: cannot link '/nix/store/.tmp-link-xxxxx-xxxxx' to '/nix/store/.links/xxxx': File exists"
diff --git a/outputs/aarch64-darwin/src/frieren.nix b/outputs/aarch64-darwin/src/frieren.nix
new file mode 100644
index 00000000..e3d844a4
--- /dev/null
+++ b/outputs/aarch64-darwin/src/frieren.nix
@@ -0,0 +1,35 @@
+{
+  # NOTE: the args not used in this file CAN NOT be removed!
+  # because haumea pass argument lazily,
+  # and these arguments are used in the functions like `mylib.nixosSystem`, `mylib.colmenaSystem`, etc.
+  inputs,
+  lib,
+  mylib,
+  myvars,
+  system,
+  genSpecialArgs,
+  ...
+} @ args: let
+  name = "frieren";
+
+  modules = {
+    darwin-modules =
+      (map mylib.relativeToRoot [
+        # common
+        "secrets/darwin.nix"
+        "modules/darwin"
+        # host specific
+        "hosts/darwin-${name}"
+      ])
+      ++ [];
+    home-modules = map mylib.relativeToRoot [
+      "hosts/darwin-${name}/home.nix"
+      "home/darwin"
+    ];
+  };
+
+  systemArgs = modules // args;
+in {
+  # macOS's configuration
+  darwinConfigurations.${name} = mylib.macosSystem systemArgs;
+}
diff --git a/secrets/README.md b/secrets/README.md
index 909cde75..bc28f589 100644
--- a/secrets/README.md
+++ b/secrets/README.md
@@ -56,7 +56,6 @@ let
   # If you do not have this file, you can generate all the host keys by command:
   #    sudo ssh-keygen -A
   idol_ai = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINHZtzeaQyXwuRMLzoOAuTu8P9bu5yc5MBwo5LI3iWBV root@ai";
-  harmonica = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINT7Pgy/Yl+t6UkHp5+8zfeyJqeJ8EndyR1Vjf/XBe5f root@harmonica";
   fern = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMokXUYcUy7tysH4tRR6pevFjyOP4cXMjpBSgBZggm9X root@fern";
 
   # A key for recovery purpose, generated by `ssh-keygen -t ed25519 -a 256 -C "ryan@agenix-recovery"` with a strong passphrase
@@ -64,7 +63,6 @@ let
   recovery_key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHnIGH+653Oe+GQaA8zjjj7HWMWp7bWXed4q5KqY4nqG ryan@agenix-recovery";
   systems = [
     idol_ai
-    harmonica
     fern
 
     recovery_key
diff --git a/vars/default.nix b/vars/default.nix
index af1f85dc..272676ca 100644
--- a/vars/default.nix
+++ b/vars/default.nix
@@ -20,6 +20,6 @@
   sshAuthorizedKeys = [
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIKlN+Q/GxvwxDX/OAjJHaNFEznEN4Tw4E4TwqQu/eD6 ryan@idols-ai"
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFIznBmtZlMcVUL+uPFltLTNa8Y1J0aT1E36AXQV07su ryan@fern"
-    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPwZ9MdotnyhxIJrI4gmVshExHiZOx+FGFhcW7BaYkfR ryan@harmonica"
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDc1PNTXzzvd93E+e9LXvnEzqgUI5gMTEF/IitvzgmL+ ryan@frieren"
   ];
 }