下工夫
xià​gōng​fu

to put in time and energy

Senses

下工夫 xià​gōng​fu (also xià​gōng​fū) to put in time and energy

To spend a significant amount of time and effort in order to accomplish something or master a skill; also written as 下功夫 xià​gōng​fu.

References

variant 下工夫/下工夫 → 下功夫/下功夫
variant 下功夫/下功夫 → 下工夫/下工夫