First of all , I got root permission, disable-verity ,and disable-verification in vendor.
OS: A13.
KRNL: 4.14.276.
ROOT: got.
Question:
How should i do for remount system partition for read and write allowed without flash whole system to user_debug edition aosp rom package?

coral:/data/local/tmp # ./remount
failed to remount partition dev:/dev/block/dm-1 mnt:/: Read-only file system
Consider providing all the dependencies to enable overlayfs
failed to remount partition dev:/dev/block/dm-4 mnt:/system_ext: Read-only file system
Consider providing all the dependencies to enable overlayfs
failed to remount partition dev:/dev/block/dm-2 mnt:/vendor: Read-only file system
Consider providing all the dependencies to enable overlayfs
failed to remount partition dev:/dev/block/dm-3 mnt:/product: Read-only file system
Consider providing all the dependencies to enable overlayfs