刻苦耐勞 飲水思源

Degi Hari

刻苦耐勞
飲水思源

Literally means:

To suffer hardship and persevere in toil.
When drinking water, think of its source.

What it means is that one should always be hardworking and persevering in all things, at all times. And whatever we do, we should always remember and be grateful to all those who have helped us in one way or another, in ways big and small.