diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..fdddb29
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..3b6fe86
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1679944645,
+        "narHash": "sha256-e5Qyoe11UZjVfgRfwNoSU57ZeKuEmjYb77B9IVW7L/M=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4bb072f0a8b267613c127684e099a70e1f6ff106",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nur": {
+      "locked": {
+        "lastModified": 1680080610,
+        "narHash": "sha256-e5GOM6FHXXPu4byNAiLQDKu/REVM2MtDH5QJ/C/JQbI=",
+        "owner": "nix-community",
+        "repo": "NUR",
+        "rev": "a9ac1b12b58122c9c1ba4cbdfd444f5ba080fe36",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "NUR",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "nur": "nur"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..492e415
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,19 @@
+{
+  inputs = {
+    # Pin nixpkgs to a specific commit
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    # nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
+
+    nur.url = "github:nix-community/NUR";
+    };
+
+  outputs = { self, nixpkgs, nur }: {
+    nixosConfigurations.xin-laptop = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        nur.nixosModules.nur
+        machines/laptop/configuration.nix
+      ];
+    };
+  };
+}
diff --git a/machines/clash.nix b/machines/clash.nix
new file mode 100644
index 0000000..db254ce
Binary files /dev/null and b/machines/clash.nix differ
diff --git a/machines/dnscrypt.nix b/machines/dnscrypt.nix
new file mode 100644
index 0000000..3ecdcb8
--- /dev/null
+++ b/machines/dnscrypt.nix
@@ -0,0 +1,28 @@
+{ config, lib, pkgs, ... }:
+{
+  services.dnscrypt-proxy2 = {
+    enable = true;
+    settings = {
+      ipv6_servers = false;
+      require_dnssec = true;
+      sources = {
+        public-resolvers = {
+          urls = [
+            "https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/public-resolvers.md"
+            "https://download.dnscrypt.info/resolvers-list/v3/public-resolvers.md"
+          ];
+          cache_file = "/var/lib/dnscrypt-proxy2/public-resolvers.md";
+          minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
+        };
+      };
+      server_names = [ "cloudflare" "tuna-doh-ipv4" ];
+    };
+  };
+
+  networking.networkmanager.dns = "none";
+
+  # dns
+  systemd.services.dnscrypt-proxy2.serviceConfig = {
+    StateDirectory = "dnscrypt-proxy";
+  };
+}
diff --git a/machines/laptop/configuration.nix b/machines/laptop/configuration.nix
new file mode 100644
index 0000000..cb416cc
--- /dev/null
+++ b/machines/laptop/configuration.nix
@@ -0,0 +1,356 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, ... }:
+
+{
+  imports =
+    [
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ../clash.nix
+      ../vscode.nix
+      # ../dnscrypt.nix
+      ./secret.nix
+    ];
+
+  # Bootloader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.loader.efi.efiSysMountPoint = "/boot/efi";
+  # boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.kernelModules = [ "nvidia" "nvidia_modeset" "nvidia_uvm" ];
+
+  networking.hostName = "xin-laptop"; # Define your hostname.
+
+  # Enable networking
+  networking = {
+    nameservers = [ "127.0.0.1" "::1" ];
+    networkmanager = {
+      enable = true;
+    };
+    resolvconf.useLocalResolver = true;
+  };
+
+  # Setup wireguard
+  # Set your time zone.
+  time.timeZone = "Asia/Shanghai";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.utf8";
+
+  # Chinese Input Method
+  i18n.inputMethod = {
+    enabled = "fcitx5";
+    fcitx5.addons = with pkgs; [ fcitx5-rime ];
+    fcitx5.enableRimeData = true;
+  };
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "zh_CN.utf8";
+    LC_IDENTIFICATION = "zh_CN.utf8";
+    LC_MEASUREMENT = "zh_CN.utf8";
+    LC_MONETARY = "zh_CN.utf8";
+    LC_NAME = "zh_CN.utf8";
+    LC_NUMERIC = "zh_CN.utf8";
+    LC_PAPER = "zh_CN.utf8";
+    LC_TELEPHONE = "zh_CN.utf8";
+    LC_TIME = "en_US.utf8";
+  };
+
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+  # services.xserver.dpi = 96;
+
+  # Enable the GNOME Desktop Environment.
+  services.xserver.displayManager.gdm.enable = true;
+  services.xserver.desktopManager.gnome.enable = true;
+
+  # Configure keymap in X11
+  services.xserver = {
+    layout = "us";
+    xkbVariant = "";
+  };
+
+  # Enable CUPS to print documents.
+  services.printing.enable = true;
+  services.printing.drivers = [ pkgs.hplip ];
+
+  # Enable sound with pipewire.
+  sound.enable = true;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    wireplumber.enable = true;
+    alsa.enable = true;
+    #alsa.support32Bit = true;
+    pulse.enable = true;
+    # If you want to use JACK applications, uncomment this
+    jack.enable = true;
+
+    # use the example session manager (no others are packaged yet so this is enabled by default,
+    # no need to redefine it in your config for now)
+    #media-session.enable = true;
+  };
+
+  # Enable touchpad support (enabled default in most desktopManager).
+  # services.xserver.libinput.enable = true;
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.xin = {
+    isNormalUser = true;
+    description = "xin";
+    extraGroups = [ "networkmanager" "wheel" "wireshark" ];
+  };
+
+  # Enable automatic login for the user.
+  services.xserver.displayManager.autoLogin.enable = true;
+  services.xserver.displayManager.autoLogin.user = "xin";
+
+  # Workaround for GNOME autologin: https://github.com/NixOS/nixpkgs/issues/103746#issuecomment-945091229
+  systemd.services."getty@tty1".enable = false;
+  systemd.services."autovt@tty1".enable = false;
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [
+    # Filesystem
+    nfs-utils
+
+    winetricks
+    wineWowPackages.waylandFull
+    faudio
+
+    man-pages
+    # ==== CLI tools ==== #
+    rust-analyzer
+    leetcode-cli
+
+    tree
+    wget
+    tmux
+    # ffmpeg
+    tealdeer
+    neofetch
+    rclone
+    clash
+    # tesseract5 # ocr
+    # ocrmypdf # pdfocr
+
+    grc
+    fishPlugins.pisces
+    fishPlugins.bass
+    fishPlugins.done
+
+    hyperfine # benchmarking tool
+    grex # generate regex from example
+    delta # diff viewer
+    zoxide # autojumper
+    du-dust # du + rust
+    alacritty # terminal emulator
+    zellij # modern multiplexer
+
+    # ==== Development ==== #
+    # VCS
+    git
+  
+    jetbrains.jdk # patch jetbrain runtime java
+    # jetbrains.clion
+    jetbrains.pycharm-professional
+    jetbrains.idea-ultimate
+    android-studio
+
+    # Language server
+    clang-tools
+    rnix-lsp
+
+    # C/C++
+    gcc
+    gdb
+
+    # Python
+    # reference: https://nixos.wiki/wiki/Python
+    (
+      let
+        my-python-packages = python-packages: with python-packages; [
+          pandas
+          requests
+          numpy
+          pyyaml
+        ];
+        python-with-my-packages = python3.withPackages my-python-packages;
+      in
+      python-with-my-packages
+    )
+
+    # Tex
+    texlive.combined.scheme-full
+
+    # ==== GUI Softwares ==== #
+    # Gnome tweaks
+    gnomeExtensions.dash-to-dock
+    gnomeExtensions.hide-top-bar
+    gnomeExtensions.tray-icons-reloaded
+    gnome.gnome-tweaks
+    gthumb
+
+    steam
+
+    # Multimedia
+    vlc
+    obs-studio
+    spotify
+    netease-cloud-music-gtk
+
+    digikam
+
+    # IM
+    tdesktop
+    qq
+
+    # Mail
+    thunderbird
+
+    # Password manager
+    keepassxc
+
+    # Browser
+    firefox
+    chromium
+    microsoft-edge
+
+    # Writting
+    obsidian
+    zotero
+    wpsoffice
+
+    config.nur.repos.linyinfeng.wemeet
+
+    virt-manager
+  ];
+  # use vim for editor
+  programs.vim = {
+    defaultEditor = true;
+  };
+
+  # use fish as default shell
+  environment.shells = [ pkgs.fish ];
+  users.defaultUserShell = pkgs.fish;
+  programs.fish = {
+    enable = true;
+  };
+
+  programs.wireshark = {
+    enable = true;
+    package = pkgs.wireshark-qt;
+  };
+
+  # Add gsconnect, open firewall
+  programs.kdeconnect = {
+    enable = true;
+    package = pkgs.gnomeExtensions.gsconnect;
+  };
+
+  programs.steam = {
+    enable = true;
+    remotePlay.openFirewall = true;
+  };
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  # programs.gnupg.agent = {
+  #   enable = true;
+  #   enableSSHSupport = true;
+  # };
+
+  # List services that you want to enable:
+
+  # Enable the OpenSSH daemon.
+  # services.openssh.enable = true;
+
+  # services.gnome.gnome-remote-desktop.enable = true;
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "22.05"; # Did you read the comment?
+
+  # Use mirror for binary cache
+  nix.settings.substituters = [
+    "https://mirrors.ustc.edu.cn/nix-channels/store"
+    # "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store"
+  ];
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # MTP support
+  services.gvfs.enable = true;
+
+  # Enable Tailscale
+  services.tailscale.enable = true;
+
+  # Setup Nvidia driver
+  services.xserver.videoDrivers = [ "nvidia" ];
+  hardware.opengl = {
+    enable = true;
+    # driSupport = true;
+  };
+  hardware.nvidia.modesetting.enable = true;
+  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
+  # hardware.nvidia.open = true;
+  hardware.nvidia.prime = {
+    offload.enable = true;
+    #    offload.enableOffloadCmd = true;
+    nvidiaBusId = "PCI:1:0:0";
+    amdgpuBusId = "PCI:4:0:0";
+  };
+
+  # Fonts
+  fonts = {
+    fonts = with pkgs; [
+      noto-fonts
+      noto-fonts-emoji
+      liberation_ttf
+      fira-code
+      fira-code-symbols
+      mplus-outline-fonts.githubRelease
+      dina-font
+      proggyfonts
+      ubuntu_font_family
+      # Chinese
+      wqy_microhei
+      wqy_zenhei
+      noto-fonts-cjk-sans
+      noto-fonts-cjk-serif
+      source-han-sans
+      source-han-serif
+    ];
+    fontconfig = {
+      defaultFonts = {
+        serif = [ "Noto Serif CJK SC" "Ubuntu" ];
+        sansSerif = [ "Noto Sans CJK SC" "Ubuntu" ];
+        monospace = [ "FiraCode" "Ubuntu" ];
+      };
+    };
+  };
+  # Virtualization
+  virtualisation = {
+    libvirtd.enable = true;
+    podman = {
+      enable = true;
+      enableNvidia = true;
+    };
+  };
+}
diff --git a/machines/laptop/hardware-configuration.nix b/machines/laptop/hardware-configuration.nix
new file mode 100644
index 0000000..6c5f7e1
--- /dev/null
+++ b/machines/laptop/hardware-configuration.nix
@@ -0,0 +1,42 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "ahci" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/73ff3986-ff55-4e9b-a857-9fc3878ea94f";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot/efi" =
+    { device = "/dev/disk/by-uuid/5A85-9129";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/ccf8e837-d9c6-4e59-a36d-6bbd4836d11a"; }
+    ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.tailscale0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.virbr0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wg0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp2s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}
diff --git a/machines/laptop/secret.nix b/machines/laptop/secret.nix
new file mode 100644
index 0000000..15bc5d5
Binary files /dev/null and b/machines/laptop/secret.nix differ
diff --git a/machines/vscode.nix b/machines/vscode.nix
new file mode 100644
index 0000000..0ec1e87
--- /dev/null
+++ b/machines/vscode.nix
@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+{
+  environment.systemPackages = [
+    (pkgs.vscode-with-extensions.override {
+      vscodeExtensions = with pkgs.vscode-extensions; [
+        arrterian.nix-env-selector
+
+        bbenoist.nix
+        ms-azuretools.vscode-docker
+        ms-vscode-remote.remote-ssh
+        vscodevim.vim
+        github.copilot
+        github.vscode-pull-request-github
+        eamodio.gitlens
+        gruntfuggly.todo-tree # todo highlight
+
+        vadimcn.vscode-lldb # debugger
+
+        # Language support
+        ms-python.python
+        davidanson.vscode-markdownlint
+        llvm-vs-code-extensions.vscode-clangd
+        jnoortheen.nix-ide
+        james-yu.latex-workshop
+        rust-lang.rust-analyzer
+      ] ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [
+        {
+          name = "remote-ssh-edit";
+          publisher = "ms-vscode-remote";
+          version = "0.47.2";
+          sha256 = "1hp6gjh4xp2m1xlm1jsdzxw9d8frkiidhph6nvl24d0h8z34w49g";
+        }
+      ];
+    })
+  ];
+}