diff --git a/nix/configurations/vanadium/home/programs.nix b/nix/configurations/vanadium/home/programs.nix
index b85e86d2..a2b44af7 100644
--- a/nix/configurations/vanadium/home/programs.nix
+++ b/nix/configurations/vanadium/home/programs.nix
@@ -110,6 +110,7 @@
     pkgs.signal-desktop
     pkgs.tuba # mastodon GUI client
     pkgs.emoji-picker-rs
+    pkgs.telegram-desktop # for archlinux china
 
     # wm utilities
     pkgs.xbrightness
@@ -122,6 +123,7 @@
     # audio utilities
     pkgs.helvum
     pkgs.pavucontrol
+    pkgs.pulseaudio # pactl value control
     pkgs.pantheon.elementary-sound-theme
   ];
 
diff --git a/nix/homeModules/common/zen-browser.nix b/nix/homeModules/common/zen-browser.nix
index f441838d..993b1175 100644
--- a/nix/homeModules/common/zen-browser.nix
+++ b/nix/homeModules/common/zen-browser.nix
@@ -50,7 +50,7 @@ in
     # https://searchfox.org/mozilla-central/source/browser/components/enterprisepolicies/Policies.sys.mjs
     # Some policies can be rewritten to profiles configuration
     #
-    # TODO: try out the "locked" semantic from zen
+    # "locked" semantic from zen (doesn't seem to be doing anything, attempted for zen-twilight 1.18t)
     # https://github.com/0xc000022070/zen-browser-flake/tree/main#preferences
     #
     # To check which option is mapped to which about:config
@@ -67,6 +67,7 @@ in
         "layout.css.devPixelsPerPx" = 1.1;
         "browser.startup.page" = 1;
         "browser.translations.automaticallyPopup" = false;
+        "browser.tabs.closeWindowWithLastTab" = true;
 
         # open links in new window
         # this works a lot better with xmonad where I have a bunch of windows
diff --git a/nix/networks/list.nix b/nix/networks/list.nix
index 3dca7a25..75127935 100644
--- a/nix/networks/list.nix
+++ b/nix/networks/list.nix
@@ -93,6 +93,10 @@ in
     ssid = "NTUH_guest";
     randomizeMac = true;
   }
+  {
+    ssid = "i_Tzuchi_WiFi";
+    randomizeMac = true;
+  }
 
   { ssid = "_SNCF_WIFI_INOUI"; }
   { ssid = "_WIFI_LYRIA"; }