Emulate your system partitions become read-write-able by using | HuskyDG Modules Repo

Emulate your system partitions become read-write-able by using OverlayFS
Make system partition (/system, /vendor, /product, /system_ext) become read-write.
Use /data as upperdir for overlayfs (only support ext4 /data)
All modifications to overlayfs partition will not be made directly, but will be stored in upperdir, so it is easy to revert.