diff --git a/nix.sh b/nix.sh
new file mode 100644
index 0000000..a8c1f24
--- /dev/null
+++ b/nix.sh
@@ -0,0 +1,152 @@
+#!/usr/bin/env bash
+profile=~/.nix-profile/etc/profile.d/nix.sh
+
+install_source=https://nixos.org/nix/install
+mirror_ustc=https://mirrors.ustc.edu.cn
+mirror_bfsu=https://mirrors.bfsu.edu.cn
+mirror_nju=https://mirror.nju.edu.cn
+mirror_iscas=https://mirror.iscas.ac.cn
+channel=nixpkgs-unstable
+
+conn_test() {
+    # test all arguments, return status code if not 200
+    for arg in "$@"; do
+        result=$(curl --connect-timeout 5 -o /tmp/conn-test -s -w "%{http_code}" $arg -L -I)
+        if [[ -z "$result" || "$result" != "200" ]]; then
+            echo "$result"
+            return 0
+        fi
+        test_output=$(cat /tmp/conn-test | grep "We have detected enormous traffic")
+        if [ ! -z "$test_output" -a "$test_output" != " " ]; then
+            echo "999"
+            return 0
+        fi
+    done
+    echo "200"
+    return 0
+}
+
+echo ""
+echo "---Connection Status---"
+ustc_code=$(conn_test $mirror_ustc/nix-channels/store)
+echo "USTC: $ustc_code"
+bfsu_code=$(conn_test $mirror_bfsu/nix-channels/store $mirror_bfsu/nix/latest/install)
+echo "BFSU: $bfsu_code"
+nju_code=$(conn_test $mirror_nju/nix-channels/ $mirror_nju/nix/latest/install)
+echo "NJU: $nju_code"
+iscas_code=$(conn_test $mirror_iscas/nix-channels/ $mirror_iscas/nix/latest/install)
+echo "ISCAS: $iscas_code"
+nix_code=$(conn_test https://nixos.org/)
+echo "NIX: $nix_code"
+
+if [[ "$nix_no_mirror" ]]; then
+    echo "wont use mirror for channel"
+elif [[ "$nix_mirror" ]]; then
+    selected_mirror=$nix_mirror
+elif [[ "$nju_code" == "200" ]]; then
+    selected_mirror=$mirror_nju
+elif [[ "$bfsu_code" == "200" ]]; then
+    selected_mirror=$mirror_bfsu
+elif [[ "$ustc_code" == "200" ]]; then
+    selected_mirror=$mirror_ustc
+elif [[ "$iscas_code" == "200" ]]; then
+    selected_mirror=$mirror_iscas
+fi
+
+# Note: USTC mirror didn't provide install script
+if [[ "$nix_install_source" ]]; then
+    echo "use install source $install_source"
+    install_source=$nix_install_source
+elif [[ "$nix_no_mirror" ]]; then
+    echo "wont use mirror for nix install script"
+elif [[ "$nju_code" == "200" ]]; then
+    install_source=$mirror_nju/nix/latest/install
+elif [[ "$bfsu_code" == "200" ]]; then
+    install_source=$mirror_bfsu/nix/latest/install
+elif [[ "$iscas_code" == "200" ]]; then
+    install_source=$mirror_iscas/nix/latest/install
+fi
+
+if [ -f $profile ] && ! [ -x "$(command -v nix)" ]; then
+    . $profile || true
+fi
+
+set -e
+PATH=$PATH:/usr/sbin
+
+if ! [ -x "$(command -v nix)" ]; then
+    echo No nix found. Installing...
+    if [ -x "$(command -v apk)" ]; then
+        # preserve=ownership,timestamps requested by setup-nix.sh
+        # and `cp` command from busybox doesn't support this option
+        apk add xz curl bash shadow coreutils
+    fi
+    mkdir -p -m 0755 /nix
+    if ! [ -x "$(command -v groupadd)" ]; then
+        echo "groupadd command was required to run this script"
+        exit
+    fi
+    groupadd nixbld -g 30000 || true
+    for i in {1..10}; do
+        useradd -c "Nix build user $i" -d /var/empty -g nixbld -G nixbld -M -N -r -s "$(which nologin)" "nixbld$i" || true
+    done
+    if ! [ -x "$(command -v xz)" ]; then
+        if [ -f "/usr/bin/apt-get" ] && [ -f "/usr/bin/dpkg" ]; then
+            apt-get update
+            apt-get install xz-utils -y
+        else
+            echo "xz command was required to run this script"
+            exit
+        fi
+    fi
+    if [ -f "/snap/bin/curl" ]; then # Not compatible with snap curl
+        snap remove curl || true
+        if [ -f "/usr/bin/apt-get" ] && [ -f "/usr/bin/dpkg" ]; then
+            apt-get update
+            apt-get install curl -y
+        elif ! [ -x "$(command -v wget)" ]; then
+            echo "please install wget or curl, without snap."
+            exit
+        fi
+    fi
+    echo "Downloading from $install_source"
+    if [[ -z "$NIX_DEBUG" ]]; then
+        curl -L $install_source --output /tmp/nix-install.sh
+        head /tmp/nix-install.sh
+    else
+        curl -L $install_source --output /tmp/nix-install.sh -v
+        head /tmp/nix-install.sh
+    fi
+    if [[ "$NIX_USE_DAEMON" ]]; then
+        sh /tmp/nix-install.sh --no-daemon --no-channel-add
+    else
+        sh /tmp/nix-install.sh --no-channel-add
+    fi
+    echo ". $profile" >>~/.bashrc
+    [[ -f ~/.zshrc ]] && echo ". $profile" >>~/.zshrc
+    . $profile
+    mkdir -p /etc/nix
+fi
+
+if [[ -z "$nix_no_mirror" ]]; then
+    echo "substituters = $mirror_bfsu/nix-channels/store $mirror_ustc/nix-channels/store $mirror_nju/nix-channels/store $mirror_iscas/nix-channels/store https://nix-bin.hydro.ac/" >/etc/nix/nix.conf    
+else
+    echo "substituters = https://cache.nixos.org/" >/etc/nix/nix.conf
+fi
+echo "trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydro.ac:EytfvyReWHFwhY9MCGimCIn46KQNfmv9y8E2NqlNfxQ=" >>/etc/nix/nix.conf
+echo "connect-timeout = 10" >>/etc/nix/nix.conf
+echo "experimental-features = nix-command flakes" >>/etc/nix/nix.conf
+if ! [ "$(nix-channel --list | grep nixpkgs)" ]; then
+    if [[ -z "$selected_mirror" ]]; then
+        nix-channel --add https://nixos.org/channels/$channel nixpkgs
+    else
+        nix-channel --add $selected_mirror/nix-channels/$channel nixpkgs
+    fi
+fi
+nix-channel --add https://nix-channel.hydro.ac/ hydro
+echo "Now unpacking channel. might take a long time."
+echo "You can safely ignore the 'installing Nix as root is not supported by this script' error above."
+nix-channel --update
+mkdir -p ~/.config/nixpkgs
+
+set +e
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