diff --git a/Rely/init_build_environment.sh b/Rely/init_build_environment.sh
new file mode 100644
index 0000000..945a0a4
--- /dev/null
+++ b/Rely/init_build_environment.sh
@@ -0,0 +1,296 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) ImmortalWrt.org
+
+DEFAULT_COLOR="\033[0m"
+BLUE_COLOR="\033[36m"
+GREEN_COLOR="\033[32m"
+RED_COLOR="\033[31m"
+YELLOW_COLOR="\033[33m"
+
+function __error_msg() {
+	echo -e "${RED_COLOR}[ERROR]${DEFAULT_COLOR} $*"
+}
+
+function __info_msg() {
+	echo -e "${BLUE_COLOR}[INFO]${DEFAULT_COLOR} $*"
+}
+
+function __success_msg() {
+	echo -e "${GREEN_COLOR}[SUCCESS]${DEFAULT_COLOR} $*"
+}
+
+function __warning_msg() {
+	echo -e "${YELLOW_COLOR}[WARNING]${DEFAULT_COLOR} $*"
+}
+
+function check_system() {
+	__info_msg "Checking system info..."
+
+	VERSION_CODENAME="$(source /etc/os-release; echo "$VERSION_CODENAME")"
+
+	case "$VERSION_CODENAME" in
+	"bionic")
+		GCC_VERSION="9"
+		NODE_DISTRO="$VERSION_CODENAME"
+		NODE_KEY="nodesource.gpg.key"
+		NODE_VERSION="18"
+		UBUNTU_CODENAME="$VERSION_CODENAME"
+		VERSION_PACKAGE="lib32gcc-s1 libpython3.6-dev python2.7 python3.6"
+		;;
+	"buster")
+		BPO_FLAG="-t $VERSION_CODENAME-backports"
+		DISTRO_PREFIX="debian-archive/"
+		DISTRO_SECUTIRY_PATH="buster/updates"
+		GCC_VERSION="8"
+		UBUNTU_CODENAME="bionic"
+		VERSION_PACKAGE="lib32gcc1 python2"
+		;;
+	"focal"|\
+	"jammy")
+		GCC_VERSION="9"
+		UBUNTU_CODENAME="$VERSION_CODENAME"
+		VERSION_PACKAGE="lib32gcc-s1 python2"
+		;;
+	"bullseye")
+		BPO_FLAG="-t $VERSION_CODENAME-backports"
+		GCC_VERSION="9"
+		UBUNTU_CODENAME="focal"
+		VERSION_PACKAGE="lib32gcc-s1 python2"
+		;;
+	"bookworm")
+		BPO_FLAG="-t $VERSION_CODENAME-backports"
+		GCC_VERSION="12"
+		UBUNTU_CODENAME="jammy"
+		VERSION_PACKAGE="lib32gcc-s1"
+		;;
+	"noble")
+		GCC_VERSION="12"
+		UBUNTU_CODENAME="$VERSION_CODENAME"
+		VERSION_PACKAGE="lib32gcc-s1"
+		;;
+	*)
+		__error_msg "Unsupported OS, use Ubuntu 20.04 instead."
+		exit 1
+		;;
+	esac
+
+	[ "$(uname -m)" == "x86_64" ] || { __error_msg "Unsupported architecture, use AMD64 instead." && exit 1; }
+
+	[ "$(whoami)" == "root" ] || { __error_msg "You must run this script as root." && exit 1; }
+}
+
+function check_network() {
+	__info_msg "Checking network..."
+
+	curl -s "myip.ipip.net" | grep -qo "中国" && CHN_NET=1
+	curl --connect-timeout 10 "baidu.com" > "/dev/null" 2>&1 || { __warning_msg "Your network is not suitable for compiling OpenWrt!"; }
+	curl --connect-timeout 10 "google.com" > "/dev/null" 2>&1 || { __warning_msg "Your network is not suitable for compiling OpenWrt!"; }
+}
+
+function update_apt_source() {
+	__info_msg "Updating apt source lists..."
+	set -x
+
+	apt update -y
+	apt install -y apt-transport-https gnupg2
+	if [ -n "$CHN_NET" ]; then
+		mv "/etc/apt/sources.list" "/etc/apt/sources.list.bak"
+		if [ "$VERSION_CODENAME" == "$UBUNTU_CODENAME" ]; then
+			cat <<-EOF >"/etc/apt/sources.list"
+				deb https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME main restricted universe multiverse
+				deb-src https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME main restricted universe multiverse
+
+				deb https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-security main restricted universe multiverse
+				deb-src https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-security main restricted universe multiverse
+
+				deb https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-updates main restricted universe multiverse
+				deb-src https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-updates main restricted universe multiverse
+
+				# deb https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-proposed main restricted universe multiverse
+				# deb-src https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-proposed main restricted universe multiverse
+
+				deb https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-backports main restricted universe multiverse
+				deb-src https://repo.huaweicloud.com/ubuntu/ $VERSION_CODENAME-backports main restricted universe multiverse
+			EOF
+		else
+			cat <<-EOF > "/etc/apt/sources.list"
+				deb https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME main contrib
+				deb-src https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME main contrib
+
+				deb https://repo.huaweicloud.com/debian-security ${DISTRO_SECUTIRY_PATH:-$VERSION_CODENAME-security} main contrib
+				deb-src https://repo.huaweicloud.com/debian-security ${DISTRO_SECUTIRY_PATH:-$VERSION_CODENAME-security} main contrib
+
+				deb https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME-updates main contrib
+				deb-src https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME-updates main contrib
+
+				deb https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME-backports main contrib
+				deb-src https://repo.huaweicloud.com/${DISTRO_PREFIX}debian/ $VERSION_CODENAME-backports main contrib
+			EOF
+		fi
+	fi
+
+	mkdir -p "/etc/apt/sources.list.d"
+
+	cat <<-EOF >"/etc/apt/sources.list.d/nodesource.list"
+		deb https://deb.nodesource.com/node_${NODE_VERSION:-20}.x ${NODE_DISTRO:-nodistro} main
+	EOF
+	curl -sL "https://deb.nodesource.com/gpgkey/${NODE_KEY:-nodesource-repo.gpg.key}" -o "/etc/apt/trusted.gpg.d/nodesource.asc"
+
+	cat <<-EOF >"/etc/apt/sources.list.d/yarn.list"
+		deb https://dl.yarnpkg.com/debian/ stable main
+	EOF
+	curl -sL "https://dl.yarnpkg.com/debian/pubkey.gpg" -o "/etc/apt/trusted.gpg.d/yarn.asc"
+
+	if [ "$VERSION_CODENAME" == "bionic" ]; then
+		cat <<-EOF >"/etc/apt/sources.list.d/gcc-toolchain.list"
+			deb https://ppa.launchpadcontent.net/ubuntu-toolchain-r/test/ubuntu $UBUNTU_CODENAME main
+			deb-src https://ppa.launchpadcontent.net/ubuntu-toolchain-r/test/ubuntu $UBUNTU_CODENAME main
+		EOF
+		curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x1e9377a2ba9ef27f" -o "/etc/apt/trusted.gpg.d/gcc-toolchain.asc"
+	fi
+
+	cat <<-EOF >"/etc/apt/sources.list.d/git-core-ubuntu-ppa.list"
+		deb https://ppa.launchpadcontent.net/git-core/ppa/ubuntu $UBUNTU_CODENAME main
+		deb-src https://ppa.launchpadcontent.net/git-core/ppa/ubuntu $UBUNTU_CODENAME main
+	EOF
+	curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xe1dd270288b4e6030699e45fa1715d88e1df1f24" -o "/etc/apt/trusted.gpg.d/git-core-ubuntu-ppa.asc"
+
+	cat <<-EOF >"/etc/apt/sources.list.d/llvm-toolchain.list"
+		deb https://apt.llvm.org/$VERSION_CODENAME/ llvm-toolchain-$VERSION_CODENAME-18 main
+		deb-src https://apt.llvm.org/$VERSION_CODENAME/ llvm-toolchain-$VERSION_CODENAME-18 main
+	EOF
+	curl -sL "https://apt.llvm.org/llvm-snapshot.gpg.key" -o "/etc/apt/trusted.gpg.d/llvm-toolchain.asc"
+
+	cat <<-EOF >"/etc/apt/sources.list.d/longsleep-ubuntu-golang-backports-$UBUNTU_CODENAME.list"
+		deb https://ppa.launchpadcontent.net/longsleep/golang-backports/ubuntu $UBUNTU_CODENAME main
+		deb-src https://ppa.launchpadcontent.net/longsleep/golang-backports/ubuntu $UBUNTU_CODENAME main
+	EOF
+	curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x52b59b1571a79dbc054901c0f6bc817356a3d45e" -o "/etc/apt/trusted.gpg.d/longsleep-ubuntu-golang-backports-$UBUNTU_CODENAME.asc"
+
+	if [ -n "$CHN_NET" ]; then
+		sed -i -e "s,apt.llvm.org,mirrors.tuna.tsinghua.edu.cn/llvm-apt,g" -e "s,^deb-src,# deb-src,g" "/etc/apt/sources.list.d/llvm-toolchain.list"
+		sed -i "s,ppa.launchpadcontent.net,launchpad.proxy.ustclug.org,g" "/etc/apt/sources.list.d"/*
+	fi
+
+	apt update -y $BPO_FLAG
+
+	set +x
+}
+function install_dependencies() {
+	__info_msg "Installing dependencies..."
+	set -x
+
+	apt full-upgrade -y $BPO_FLAG
+	apt install -y $BPO_FLAG ack antlr3 asciidoc autoconf automake autopoint binutils bison \
+		build-essential bzip2 ccache cmake cpio curl device-tree-compiler ecj fakeroot \
+		fastjar flex gawk gettext genisoimage git gnutls-dev gperf haveged help2man \
+		intltool jq libc6-dev-i386 libelf-dev libglib2.0-dev libgmp3-dev libltdl-dev \
+		libmpc-dev libmpfr-dev libncurses-dev libreadline-dev libssl-dev libtool \
+		libyaml-dev libz-dev lrzsz msmtp nano ninja-build p7zip p7zip-full patch \
+		pkgconf libpython3-dev python3 python3-pip python3-cryptography python3-docutils \
+		python3-ply python3-pyelftools qemu-utils quilt re2c rsync scons sharutils \
+		squashfs-tools subversion swig texinfo uglifyjs unzip vim wget xmlto zlib1g-dev \
+		zstd xxd $VERSION_PACKAGE
+
+	# fix broken http2 support for curl on buster
+	if [ "$VERSION_CODENAME" == "buster"]; then
+		apt full-upgrade -y
+		apt reinstall -y libcurl3-gnutls/buster
+	fi
+
+	if [ -n "$CHN_NET" ]; then
+		pip3 config set global.index-url "https://mirrors.aliyun.com/pypi/simple/"
+		pip3 config set install.trusted-host "https://mirrors.aliyun.com"
+	fi
+
+	apt install -y $BPO_FLAG "gcc-$GCC_VERSION" "g++-$GCC_VERSION" "gcc-$GCC_VERSION-multilib" "g++-$GCC_VERSION-multilib"
+	for i in "gcc-$GCC_VERSION" "g++-$GCC_VERSION" "gcc-ar-$GCC_VERSION" "gcc-nm-$GCC_VERSION" "gcc-ranlib-$GCC_VERSION"; do
+		ln -svf "$i" "/usr/bin/${i%-$GCC_VERSION}"
+	done
+	ln -svf "/usr/bin/g++" "/usr/bin/c++"
+	[ -e "/usr/include/asm" ] || ln -svf "/usr/include/$(gcc -dumpmachine)/asm" "/usr/include/asm"
+
+	apt install -y $BPO_FLAG clang-18 libclang-18-dev lld-18 liblld-18-dev
+	for i in "clang-18" "clang++-18" "clang-cpp-18" "ld.lld-18" "ld64.lld-18" "llc-18" "lld-18" "lld-link-18" "opt-18" "wasm-ld-18"; do
+		ln -svf "$i" "/usr/bin/${i%-18}"
+	done
+
+	apt install -y $BPO_FLAG llvm-18
+	for i in "/usr/bin"/llvm-*-18; do
+		ln -svf "$i" "${i%-18}"
+	done
+
+	apt install -y $BPO_FLAG nodejs yarn
+	if [ -n "$CHN_NET" ]; then
+		npm config set registry "https://registry.npmmirror.com" --global
+		yarn config set registry "https://registry.npmmirror.com" --global
+	fi
+
+	apt install -y $BPO_FLAG golang-1.23-go
+	rm -rf "/usr/bin/go" "/usr/bin/gofmt"
+	ln -svf "/usr/lib/go-1.23/bin/go" "/usr/bin/go"
+	ln -svf "/usr/lib/go-1.23/bin/gofmt" "/usr/bin/gofmt"
+	if [ -n "$CHN_NET" ]; then
+		go env -w GOPROXY=https://goproxy.cn,direct
+	fi
+
+	apt clean -y
+
+	if TMP_DIR="$(mktemp -d)"; then
+		pushd "$TMP_DIR"
+	else
+		__error_msg "Failed to create a tmp directory."
+		exit 1
+	fi
+
+	UPX_REV="4.2.4"
+	curl -fLO "https://github.com/upx/upx/releases/download/v${UPX_REV}/upx-$UPX_REV-amd64_linux.tar.xz"
+	tar -Jxf "upx-$UPX_REV-amd64_linux.tar.xz"
+	rm -rf "/usr/bin/upx" "/usr/bin/upx-ucl"
+	cp -fp "upx-$UPX_REV-amd64_linux/upx" "/usr/bin/upx-ucl"
+	chmod 0755 "/usr/bin/upx-ucl"
+	ln -svf "/usr/bin/upx-ucl" "/usr/bin/upx"
+
+	git clone --filter=blob:none --no-checkout "https://github.com/openwrt/openwrt.git" "padjffs2"
+	pushd "padjffs2"
+	git config core.sparseCheckout true
+	echo "tools/padjffs2/src" >> ".git/info/sparse-checkout"
+	git checkout
+	cd "tools/padjffs2/src"
+	make
+	strip "padjffs2"
+	rm -rf "/usr/bin/padjffs2"
+	cp -fp "padjffs2" "/usr/bin/padjffs2"
+	popd
+
+	git clone --filter=blob:none --no-checkout "https://github.com/openwrt/luci.git" "po2lmo"
+	pushd "po2lmo"
+	git config core.sparseCheckout true
+	echo "modules/luci-base/src" >> ".git/info/sparse-checkout"
+	git checkout
+	cd "modules/luci-base/src"
+	make po2lmo
+	strip "po2lmo"
+	rm -rf "/usr/bin/po2lmo"
+	cp -fp "po2lmo" "/usr/bin/po2lmo"
+	popd
+
+	curl -fL "https://build-scripts.immortalwrt.org/modify-firmware.sh" -o "/usr/bin/modify-firmware"
+	chmod 0755 "/usr/bin/modify-firmware"
+
+	popd
+	rm -rf "$TMP_DIR"
+
+	set +x
+	__success_msg "All dependencies have been installed."
+}
+function main() {
+	check_system
+	check_network
+	update_apt_source
+	install_dependencies
+}
+
+main