困难 - 不费吹灰之力

in a way that is effortless or easy

with minimum effort or time

to need to put a lot of hard work or energy into doing something

to progress without facing problems or difficulties

(of a learned skill) still easy to do after not practicing for long

to be really good at something as soon as one starts to do it

said to mean that something can be easily done or achieved

used to refer to a really easy task or undertaking

the easiest achievable task in a given situation

said to mean that something is very easy to find out

the fastest or easiest way in which something can be done or dealt with

to experience no or very few difficulties or disruptions, particularly after a period of hardship

to be achievable or available for someone without much difficulty or time

to receive something unexpectedly and without effort

a benefit that is obtained at the cost or with the effort of another person

in an easy manner and without facing many difficulties