diff --git a/configuration.nix b/configuration.nix
index f5d849c..b302565 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -20,6 +20,7 @@
     noto-fonts-emoji
     meslo-lgs-nf
     wqy_zenhei
+    hack-font
   ];
   
   # NUR Source
@@ -30,11 +31,11 @@
   };  
   
   # USTC Source
-  nix.binaryCaches = [ "https://mirrors.ustc.edu.cn/nix-channels/store" ];
+  nix.settings.substituters = [ "https://mirrors.ustc.edu.cn/nix-channels/store" ];
   
   # Virtual Box
   virtualisation.virtualbox.host.enable = true;
-  users.extraGroups.vboxusers.members = [ "chitang" ];
+  users.extraGroups.vboxusers.members = [ "lzc256" ];
   
   # Steam
   programs.steam.enable = true;
@@ -65,8 +66,8 @@
   #boot.loader.systemd-boot.enable = true;
   #boot.loader.efi.canTouchEfiVariables = true;
 
-  # networking.hostName = "nixos"; # Define your hostname.
-  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+  networking.hostName = "b85"; # Define your hostname.
+  networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
   # Set your time zone.
   time.timeZone = "Asia/Shanghai";
@@ -81,7 +82,7 @@
   networking.networkmanager.enable = true;
 
   # Configure network proxy if necessary
-  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.default = "http://127.0.0.1:7890/";
   # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
 
   # Select internationalisation properties.