diff --git a/README.md b/README.md
index da2e93b..db65f84 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,9 @@
 ```
 This project does not follow OCI standard and can only be a `PARTIAL` replacement of docker, this project is still under development.       
 For Android users, You might need to root your phone before using rurima, some container might not work properly with proot.         
+# Presets:
+We are working on some presets for using rurima to build your own projects, you can find them in the [presets](presets) directory.      
+The first preset is for running debian vm with avf on MTK devices, and we will add more presets in the future, PRs are welcome!      
 # Features:
 - Get rootfs images from dockerhub or LXC mirror.
 - Automatic parse docker image config and convert to ruri cmdline.
@@ -40,9 +43,6 @@ See [FAQ.md](doc/FAQ.md).
 # Send us your feedback!
 Your use case, your suggestions, anyway, we would love to hear from you!     
 [Discussions](https://github.com/RuriOSS/rurima/discussions/16)      
-# Also, keep up to date:
-Some updates and news will be posted on:      
-[Twitter(X)](https://x.com/RuriOSS)      
 And, don't forget to `rurima ota` to get the latest build!      
 # What's new:
 - We have a unified `pull` command to get images from dockerhub or LXC mirror now.       
diff --git a/presets/README.md b/presets/README.md
new file mode 100644
index 0000000..d7ee17b
--- /dev/null
+++ b/presets/README.md
@@ -0,0 +1,4 @@
+# About:
+This directory contains some simple presets for using rurima to build your own projects. PRs are welcome to add more presets here.      
+# Index:
+- [avf_debian_mtk.sh](avf_debian_mtk.sh): Tested on OnePlus Ace 5 Ultra with MT6991+, run debian vm with avf.      
\ No newline at end of file
diff --git a/presets/avf_debian_mtk.sh b/presets/avf_debian_mtk.sh
new file mode 100644
index 0000000..e17d594
--- /dev/null
+++ b/presets/avf_debian_mtk.sh
@@ -0,0 +1,246 @@
+#!/data/data/com.termux/files/usr/bin/bash
+check_command() {
+  if [[ -e "$(command -v $1 2>&1)" ]]; then
+    printf "\033[32mCommand $1 found\033[0m\n"
+  else
+    printf "\033[31mError: $1 not found\033[0m\n"
+    exit 1
+  fi
+}
+Ok() {
+  if [[ $1 != 0 ]]; then
+    printf "\033[31mError: $2\033[0m\n"
+    exit 1
+  fi
+}
+build_debian_rootfs() {
+  rurima pull debian:trixie ./debian
+  Ok $? "Failed to pull rootfs"
+  cat <<EEOF >debian/init.sh
+#!/bin/bash
+rm /etc/resolv.conf
+echo nameserver 1.1.1.1 > /etc/resolv.conf
+apt update
+apt install -y linux-image-arm64
+apt install -y netplan.io
+apt install -y chrony
+systemctl enable chrony
+
+cat <<EOF > /etc/netplan/90-default.yaml
+network:
+    version: 2
+    ethernets:
+all-en:
+    match:
+name: en*
+    dhcp4: false
+
+    addresses:
+      - 192.168.10.2/24
+    routes:
+      - to: default
+via: 192.168.10.1
+    nameservers:
+  addresses: [8.8.8.8]
+    dhcp6: true
+    dhcp6-overrides:
+use-domains: true
+all-eth:
+    match:
+name: eth*
+    dhcp4: true
+    dhcp4-overrides:
+use-domains: true
+    dhcp6: true
+    dhcp6-overrides:
+use-domains: true
+EOF
+
+cat <<EOF > /usr/bin/net.sh
+sleep 2
+ip route del default
+ip addr add 192.168.10.2/24 dev enp0s2
+ip link set enp0s2 up
+gvforwarder & 2>&1 >/dev/null
+sleep 2
+ip route add default via 192.168.127.1
+EOF
+
+chmod 777 /usr/bin/net.sh
+
+cat <<EOF >/etc/rc.local
+#!/bin/bash
+sleep 3
+net.sh
+mkdir -p /mnt/shared
+mount -t virtiofs shared /mnt/shared
+exit 0
+EOF
+
+chmod 777 /etc/rc.local
+echo "root:xxxx" | sudo chpasswd
+
+EEOF
+  chmod 777 debian/init.sh
+
+  rurima r -p ./debian bash /init.sh
+  cp debian/vmlinuz .
+  cp debian/initrd.img .
+  cd debian
+  rurima r -U .
+  cd ..
+  cd debian
+  rm init.sh
+  cp ${GVF} ./usr/bin/
+  chmod 777 usr/bin/gvforwarder
+  mkfs.erofs ../data.img .
+  cd ..
+}
+migrate_to_ext4() {
+  # Migrate erofs image $1 to ext4 image $2
+  # $1 will be removed
+  # As obbo broke ext4 loop mount in their f**king tampered kernel
+  FROM="$1"
+  TO="$2"
+  rm kernel
+  wget https://github.com/polygraphene/gunyah-on-sd-guide/releases/download/v0.0.3/kernel
+  Ok $? "Failed to download kernel"
+  rurima ruri -U ./alpine >/dev/null 2>&1
+  rm -rf ./alpine
+  rurima pull alpine:edge ./alpine
+  Ok $? "Failed to pull rootfs"
+  cat <<EOF >alpine/init.sh
+#!/bin/sh
+mount -t proc proc /proc
+mount -t sysfs sysfs /sys
+mount -t tmpfs tmpfs /dev
+mdev -s
+mount /dev/vdb /mnt/from
+mount /dev/vdc /mnt/to
+cd /mnt/from
+cp -a -r ./* /mnt/to/
+sync
+sleep 2s
+sync
+printf "\n\n\033[1;32m///// <OK>\033[0m\n\n"
+/sbin/poweroff -f
+sleep 3
+EOF
+  chmod 777 alpine/init.sh
+  mkdir -p alpine/mnt/from
+  mkdir -p alpine/mnt/to
+  rm alpine.img
+  cd alpine
+  mkfs.erofs ../alpine.img .
+  cd ..
+  unset LD_PRELOAD
+  crosvm run \
+    --disable-sandbox \
+    --protected-vm-without-firmware \
+    --swiotlb 512 \
+    --params 'loglevel=4 root=/dev/vda init=/init.sh' \
+    --mem 8192 --cpus 4 \
+    --socket vm.sock \
+    --vsock 3 \
+    --block alpine.img,root \
+    --block ${FROM} \
+    --block ${TO} \
+    kernel
+  rurima ruri -U ./alpine
+  rm -rf ./alpine
+  rm -rf alpine.img kernel.img ${FROM}
+}
+start_vm() {
+  ifname=crosvm_tap
+  if [ ! -d /sys/class/net/$ifname ]; then
+    # https://crosvm.dev/book/devices/net.html
+    ip tuntap add mode tap user root vnet_hdr crosvm_tap
+    ip addr add 192.168.10.1/24 dev crosvm_tap
+    ip link set crosvm_tap up
+
+    # routing
+    sysctl net.ipv4.ip_forward=1
+    HOST_DEV=$(ip route get 8.8.8.8 | awk -- '{printf $5}')
+    iptables -t nat -A POSTROUTING -o "${HOST_DEV}" -j MASQUERADE
+    iptables -A FORWARD -i "${HOST_DEV}" -o crosvm_tap -m state --state RELATED,ESTABLISHED -j ACCEPT
+    iptables -A FORWARD -i crosvm_tap -o "${HOST_DEV}" -j ACCEPT
+
+    # the main route table needs to be added
+    ip rule add from all lookup main pref 1
+  fi
+  rm ../network.sock
+  killall -9 gvproxy
+  gvproxy -listen vsock://:1024 -listen unix://$(pwd)/../network.sock &
+  sleep 2
+  curl --unix-socket /data/data/com.termux/files/home/network.sock http:/unix/services/forwarder/expose -X POST -d '{"local":":22","remote":"192.168.127.2:22"}'
+  ulimit -l unlimited
+  rm vm.sock
+  killall -9 crosvm
+  unset LD_PRELOAD
+  /apex/com.android.virt/bin/crosvm run \
+    --disable-sandbox \
+    --protected-vm-without-firmware \
+    --swiotlb 512 \
+    --params 'loglevel=4 root=/dev/vda rw' \
+    --shared-dir /sdcard/shared:shared:type=fs \
+    --mem 8192 --cpus 4 \
+    --net tap-name=crosvm_tap \
+    --socket vm.sock \
+    --vsock 3 \
+    --initrd initrd.img \
+    --block debian.img,root \
+    vmlinuz
+}
+if [ ! -n "$BASH" ]; then
+  printf "\033[31mThis is a bash script\033[0m\n"
+  exit 1
+fi
+if [[ ! -e /apex/com.android.virt/bin/crosvm ]]; then
+  printf "\033[31mError: crosvm not found, make sure that your device supports virtualization\033[0m\n"
+  exit 1
+fi
+if [[ ! -e /dev/kvm && ! -e /dev/gunyah && ! -e /dev/gzvm ]]; then
+  printf "\033[31mError: KVM, GenieZone or Gunyah are not found, make sure that your device supports virtualization\033[0m\n"
+  exit 1
+fi
+if [[ -e debian.img ]]; then
+  start_vm
+  exit 0
+fi
+check_command mkfs.erofs
+check_command wget
+check_command jq
+check_command xz
+check_command gzip
+check_command file
+check_command curl
+check_command git
+check_command make
+check_command go
+check_command rurima
+git clone https://github.com/containers/gvisor-tap-vsock
+cd gvisor-tap-vsock
+GOARCH=arm64 make
+if [[ -e bin/gvforwarder && -e bin/gvproxy ]]; then
+  export GVF=$(realpath bin/gvforwarder)
+  cp bin/gvproxy $PREFIX/bin
+else
+  printf "\033[31mError: failed to compile gvisor-tap-vsock"
+fi
+cd ..
+build_debian_rootfs
+dd if=/dev/zero of=debian.img bs=1G count=8
+mkfs.ext4 debian.img
+migrate_to_ext4 data.img debian.img
+mkdir /sdcard/shared
+printf "\n\n"
+printf "\033[1;32mDefault root password is: xxxx\033[0m"
+printf "\n\n"
+echo 3
+sleep 1
+echo 2
+sleep 1
+echo 1
+sleep 1
+echo start......
+start_vm