Royal road (to something) noun phrase informal
Used to indicate a way or method that presents no difficulties.
My grandmother said that there was no royal road to success.
A wealthy family opened to him the royal road to be a successful entrepreneur when he was 30.
My teacher advised me to practise speaking Chinese more because it was the royal road to success.
Clever methods used by experienced people in a specific domain to gain advantage
Used to describe something that is very simply and easily accomplished
Used to indicate that something is easy to achieve, it is also easy to lose
Used to refer to a set of methods or items that one can use to achieve something.
Try, use, etc. every possible method to achieve something