Gems don't shine unless they are polished.
The finest diamond must be cut.
Jade that has not been polished is worthless.
Wheat has to be ground to have a surface, and jade has to be cut to become a tool.
Diamonds should also be polished.
A knife that is often sharpened must be quick.
Newborn branches bend easily.
Ability is the same as muscle, and exercise can grow.
Skills are learned from difficulties.
No wise man will deny the exercise value of pain and sadness.
Jade is not cut, not a tool; People don't learn and don't understand.
The more polished the jade, the brighter it becomes.
Jade is like a stone in the valley and carved like a beauty.
Man is refined in the world, and the knife is sharpened in the stone.
People need to practice and horses need to ride.
Strength is great, but courage is great.
Knives will rust if they don't grind, and water will stink if it doesn't flow.
A lot of things have happened.
The road to bad things is smooth, and the road to success is tortuous.
A sharp knife without grinding is a piece of iron.
Children should ponder their studies carefully, and don't hate strict teachers because of many classes. Gold is always worn out, and swords are always dull.
Grinding.
Fine steel is made of a lot of weapons.
Blowing out wild sand begins with gold.
A hundred battles are invincible, and hard work makes a good soldier.
Worry is not afraid of white hair.
Capable people come out of suffering.
Bite the root and everything will be fine.
Elbow oil has the best polishing effect.
As long as the time is up, the milk tea will naturally be cooked.
A drop of water can pierce a stone, and a plow can sharpen a needle.
The deeper you work, the more achievements you make.
If you are not afraid of a low starting point, you are not afraid of the end.
Frosted sugarcane is always sweet.
The edge of the sword comes from sharpening, and the fragrance of plum blossoms comes from bitter cold.
A strict teacher makes a noble apprentice, and art depends entirely on tempering.
No pain, no fun.
You can't run a swift horse in the yard.
Pines can't grow in flowerpots, and eagles can't shoot in birdcages.