applications - Create, edit, and sync-with-PC txt file on Android

There are many apps that allow us to take notes on android.

But just like this thread (Is it possible to create a plain text file in android?), I want to create and edit plain txt file on android.

But moreover, I also want to automatically sync with a txt file in my PC. Ideally, dropbox. So ideally, I edit txt file on my PC then the edit will sync to my Android phone, and vice versa.

But if this ideal solution (dropbox solution) is not available, then I am fine with less ideal solution which will sync txt with PC.